MacBook TouchPad基本用法

作者:liurw 日期:2025-08-05

Basic Gestures (One and Two Fingers)

Gesture	What It Does
👉 Single Tap (1 finger)	Click (like left-click on mouse)
👉 Double Tap	Select text, word, or object
👉 Two-Finger Click (Tap or Press)	Right-click / Context menu
👉 Two-Finger Scroll	Scroll up/down/sideways in web pages, documents
👉 Pinch with 2 Fingers	Zoom in/out (photos, PDFs, maps)
👉 Rotate with 2 Fingers	Rotate images/documents (if supported)

Multi-Finger Gestures (Three and Four Fingers)

Gesture	What It Does
👉 Three-Finger Swipe Up	Mission Control — show all open windows
👉 Three-Finger Swipe Down	App Exposé — see all windows of current app
👉 Three-Finger Swipe Left/Right	Switch full-screen apps or desktops
👉 Four-Finger Pinch In	Show desktop
👉 Four-Finger Pinch Out	Launchpad (shows all apps)

How to Customize Trackpad Settings

Go to System Settings (or System Preferences on older macOS)
Click Trackpad
You'll see tabs like:
- Point & Click
- Scroll & Zoom
- More Gestures
You can:
- Turn gestures on/off
- Change tracking speed
- Watch little demo videos inside each section!

🔹 1. Apple’s Official Trackpad Tutorial (Short & Clean)

📺 YouTube: Apple - Mac Trackpad Gestures
🕐 Length: ~2 minutes
📌 Covers the basics like click, right-click, scroll, zoom, swipe between desktops, and more. Simple, visual, and easy to follow.

🔹 2. "MacBook Trackpad Gestures You Should Know" by Brandon Butch

📺 YouTube: MacBook Trackpad Gestures
🕐 Length: ~8 minutes
📌 A very clear walkthrough of both basic and advanced gestures. Great for beginners and intermediate users.

🔹 3. "Hidden MacBook Trackpad Tricks" by MacMost

📺 YouTube: MacMost Advanced Gestures
🕐 Length: ~10 minutes
📌 Shows lesser-known features and customization tricks using macOS Settings + third-party apps.

✅ Bonus: Want to Try It as You Watch?

Open System Settings → Trackpad, keep that window open, and test each gesture while watching the video. You’ll see demo videos inside macOS too!

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Introduction to Perplexity's Spaces

作者:liurw 日期:2025-07-25

Introduction to “Spaces”

“Spaces” is a brand-new content sharing and collaboration feature on our platform designed to help users not only ask questions but also systematically organize, showcase, and publish their own knowledge and insights. It functions like a mini-topic hub, personal blog, or thematic community, making content creation and discovery more convenient and structured.

Key Features

Customizable Content Themes
Users can create their own “Space” centered around a specific topic (such as AI, large language models, health, technology trends, etc.) to plan and aggregate related content.
Diverse Sharing Formats
Supports publishing various forms of content including long articles, charts, code snippets, and quoted references to suit different expression needs.
Personal and Collaborative Modes
Spaces can be managed individually or through invited collaborators who jointly edit and enrich the content.
Knowledge Archiving and Reuse
Content within a Space is stored long-term, facilitating repeated review and deep learning, ideal for building thematic knowledge bases, notes, and case collections.
Following and Interaction
Others can follow your Space, like and comment on your posts, fostering community interaction.

Who Is It For?

Individuals who enjoy systematically organizing knowledge
Users wanting to accumulate and reuse high-quality content over time
Teams needing to collaboratively maintain research or project documentation
Content creators interested in building a personal knowledge brand or sharing expertise in specific fields

Typical Use Cases

Creating an AI technology column that continuously updates the latest developments and practical tips
Archiving personal study notes into an online knowledge repository
Establishing an internal knowledge management platform for companies or project teams
Aggregating industry analyses, case studies, and thematic research collections

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Stem, Inc. (ticker: STEM) 简介

作者:liurw 日期:2025-07-20

Stem, Inc. (ticker: STEM) 简介

2025-07-18公司市场表现：上涨 46.63%

Stem, Inc. (ticker: STEM) is a leading AI-driven software and services company specializing in clean energy management. Headquartered in San Francisco, it primarily serves commercial, industrial, and utility customers worldwide by helping them plan, deploy, and operate renewable energy and energy storage assets.

分类:信息技术 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 159

Perplexity的Comet功能（ai回答）

作者:liurw 日期:2025-07-17

is an AI-powered web browser launched by Perplexity AI that fundamentally transforms how users interact with the internet by integrating artificial intelligence at its core1 23. Unlike traditional browsers that treat AI as an add-on, Comet embeds AI deeply for seamless, context-aware browsing and task automation.

Key features of Comet include:

: An AI agent integrated into a sidebar that can see and understand the content of any active webpage. It allows users to ask questions, get instant summaries of articles, analyze text in documents, and interact with content like YouTube videos without switching tabs or copy-pasting1 24.
: Users can request Comet to perform complex tasks such as booking meetings, sending emails, managing tabs, or making purchases on their behalf, collapsing multiple steps into fluid, conversational interactions14.
Perplexity Search Engine Integration: Comet uses Perplexity’s AI search engine as the default, providing AI-generated summaries and answers directly within the browser, enhancing research and decision-making processes1 23.
: Comet offers compatibility with existing Chrome extensions and allows seamless import of bookmarks and settings. It also includes a built-in ad blocker prioritizing user privacy13.
: Sensitive tasks like calendar management can be processed locally on the device, with multiple tracking modes for user privacy1.
: Currently, Comet is exclusive to subscribers of Perplexity’s $200/month Max plan and is rolling out gradually to waitlisted users. It is available on Windows and macOS, with plans to support more platforms including mobile in the future1 2 34.
: Perplexity positions Comet as a "cognitive operating system" that shifts web interaction from simple navigation to thoughtful cognition, reducing context switching and enabling users to “think out loud” while the AI executes tasks14.

Comet aims to challenge established browsers like Google Chrome by embedding advanced AI directly into the browsing experience and offering deeper task automation and personalization than typical browsers13. CEO Aravind Srinivas envisions Comet as a platform that enables "infinite retention" by becoming the default tool through which users conduct their digital lives.

:

Aspect	Description
Product	AI-powered web browser with integrated assistant
Core AI Feature	Sidebar AI that understands webpage content for Q&A and automation
Functionality	Summarizes content, manages tabs, books meetings, makes purchases
Default Search	Perplexity AI search engine
Platform	Built on Chromium; supports Chrome extensions; Windows/macOS
Availability	Perplexity Max plan subscribers ($200/month); invite-only rollout
Privacy	Local data storage, local processing options, built-in ad blocker
Vision	Cognitive OS to transform browsing into fluid, task-driven workflow

Comet represents Perplexity’s strategic move to redefine internet browsing by integrating intelligent AI assistance that enhances productivity, understanding, and decision-making in everyday web interactions1 24.

1 参考阅读：

2 https://techcrunch.com/2025/07/09/perplexity-launches-comet-an-ai-powered-web-browser/

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AI tools

作者:liurw 日期:2025-07-14

The best AI tools by category

AI assistants: ChatGPT, Grok, Claude, Gemini
Video generation: Synthesia, Google Veo, OpusClip
Image generation: GPT-4o, Midjourney
Meeting assistants: Fathom, Nyota
Automation: n8n, Manus
Research: Deep Research, NotebookLM
Writing: Rytr, Sudowrite
Search engines: Google AI Mode, Perplexity, ChatGPT search
Graphic design: Canva Magic Studio, Looka
App builders & coding tools: Lovable, Cursor
Knowledge management: Notion Q&A, Guru
Email: Hubspot Email Writer, Fyxer, Shortwave
Scheduling: Reclaim, Clockwise
Presentations: Gamma, Copilot for PowerPoint
Resume builders: Teal, Kickresume
Voice generation: ElevenLabs, Murf
Music generation: Suno, Udio
Marketing: AdCreative, AirOps

来源： https://www.synthesia.io/post/ai-tools

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GROK4 新功能（ai回答）

作者:liurw 日期:2025-07-14

Grok 4 是 xAI 推出的最新旗舰 AI 模型，相较于前代模型（如 Grok 3），在性能、功能和应用场景上均有显著提升。以下是 Grok 4 的主要新功能和特点，基于近期信息整理：1. 更强大的推理能力

学术表现：Grok 4 在多个基准测试中表现出色，例如在“Humanity's Last Exam (HLE)”上，单代理版本无工具使用时得分 25.4%，使用工具后达 41%，而多代理版本（Grok 4 Heavy）更是达到 50.7%，远超 OpenAI 的 o3（21%）和 Google 的 Gemini 2.5 Pro（21.6%）。
复杂问题解决：Grok 4 擅长多步骤逻辑推理，尤其在数学、科学和工程领域，接近甚至超越研究生水平。
工具使用：通过强化学习训练，Grok 4 能够自主选择和使用工具（如代码解释器、网页搜索）来解决复杂问题，提升了回答的准确性和实用性。

2. 多模态支持

当前能力：Grok 4 支持文本和图像输入，能够分析图片内容并提供详细描述或解释，适用于医疗影像、科学研究等场景。
未来计划：xAI 计划在未来几周或几个月内推出图像生成、视频处理等功能，进一步增强多模态能力。例如，预计 2025 年 9 月推出多模态代理，10 月推出视频生成模型。
局限性：目前视觉处理能力仍被 Elon Musk 称为“部分失明”，图像生成等功能尚未完全成熟，预计在后续版本（如“版本 7”）中改进。

3. Grok 4 Code：专用编程模型

编程能力：Grok 4 Code 是一个专为开发者设计的模型，支持 20 多种编程语言（如 Python、Javascript、C++、Go 等），提供代码生成、调试、优化等功能。
集成开发环境：内置类似 Visual Studio Code 的代码编辑器，支持文件管理、版本控制和自动化测试框架，旨在实现“代理式编码”（agentic coding），提升开发效率。
实时 IDE 集成：Grok 4 Code 可无缝嵌入开发工作流，提供实时代码建议和错误检测。