---
source_url: "http://go/ui/posts/2913/"
ingested: 2026-07-22
status: inbox
tags: [2026, hackernews, international, news, stocks, tech]
title: "📰 每日新闻简报 | 2026-07-21"
created: 2026-07-21
updated: 2026-07-21
---

# 📰 每日新闻简报 | 2026-07-21

## 🌍 国际要闻

**BBC World**
1. [特朗普对加拿大进口商品加征50%关税](https://www.bbc.co.uk/news/articles/cg4dzq3x3e1o?at_medium=RSS&at_campaign=rss)
2. [美国对伊朗发动新一轮打击，特朗普警告将为士兵死亡报复](https://www.bbc.co.uk/news/articles/cx25wg2x26do?at_medium=RSS&at_campaign=rss)
3. [也门胡塞武装宣布对沙特实施"海上禁运"](https://www.bbc.co.uk/news/articles/cm2gmddx1ldo?at_medium=RSS&at_campaign=rss)
4. [泰特兄弟在美国出庭应诉引渡程序](https://www.bbc.co.uk/news/articles/c6294y87wk6o?at_medium=RSS&at_campaign=rss)
5. [墨西哥毒枭领袖伊斯梅尔·赞巴达在美国被判终身监禁](https://www.bbc.co.uk/news/articles/ce3q1d1ed5do?at_medium=RSS&at_campaign=rss)

## 💻 科技资讯

**TechCrunch**
1. [特朗普最新任命的AI负责人已辞职](https://techcrunch.com/2026/07/20/trumps-latest-ai-czar-has-already-resigned/)
2. [谷歌正在研发新AI芯片以提升Gemini效率](https://techcrunch.com/2026/07/20/google-is-working-on-a-new-ai-chip-designed-to-make-gemini-more-efficient/)
3. [AI最重要的协议变得更易使用](https://techcrunch.com/2026/07/20/ais-most-important-protocol-is-getting-a-little-bit-easier-to-use/)
4. [X（推特）历经一年重建，重新推出Android应用](https://techcrunch.com/2026/07/20/x-relaunches-a-rebuilt-android-app-after-year-long-effort/)
5. [OpenAI惧怕开源权重模型，美国也应担忧吗？](https://techcrunch.com/2026/07/20/openai-is-scared-of-open-weight-models-should-the-us-be/)

## 📈 美股行情（2026-07-20 收盘）

### 主要指数
| 指数 | 收盘价 | 涨跌 |
|------|--------|------|
| Nasdaq Composite | 25,508.07 | -12.17 (-0.05%) |
| Nasdaq-100 (NDX) | 28,604.23 | +11.58 (+0.04%) |
| Dow Jones | 51,839.26 | -307.16 (-0.59%) |

### Nasdaq 科技股
| 股票 | 价格 | 涨跌 |
|------|------|------|
| NVDA | $202.48 | -0.80 (-0.39%) |
| AAPL | $325.50 | -1.09 (-0.33%) |
| MSFT | $399.99 | -2.30 (-0.57%) |
| GOOGL | $352.04 | +0.05 (+0.01%) |
| META | $642.80 | -3.05 (-0.47%) |
| AMZN | $248.62 | -1.37 (-0.55%) |
| TSLA | $369.93 | +0.36 (+0.10%) |
| AMD | $503.35 | -0.23 (-0.04%) |
| INTC | $96.86 | -0.20 (-0.21%) |

> **市场简析：** 美股周一涨跌互现，整体波动不大。道指受工业股拖累下跌0.59%，纳指基本持平。科技股普遍小幅走低，但特斯拉微涨0.10%，谷歌微涨0.01%表现相对坚挺。市场在财报季密集发布前保持谨慎观望。

## 🏄 Hacker News Top 10

1. [中国开源权重的AI策略正在获胜](https://werd.io/american-ai-is-locked-down-and-proprietary-its-losing/) — 868 points, 706 comments
2. [机场模拟器](https://airport.apunen.com/) — 645 points, 128 comments
3. [黑客清空罗马尼亚土地登记数据库](https://news.risky.biz/risky-bulletin-hacker-wipes-romanias-entire-land-registry-database/) — 538 points, 301 comments
4. [Kimi Work](https://www.kimi.com/products/kimi-work) — 309 points, 144 comments
5. [Jelly UI：为原生HTML表单控件添加软体物理效果](https://jelly-ui.com/) — 274 points, 111 comments
6. [人类数学家正在被反例超越](https://xenaproject.wordpress.com/2026/07/20/human-mathematicians-are-being-outcounterexampled/) — 133 points, 46 comments
7. [Nativ：在Mac上本地运行前沿开源模型](https://blaizzy.github.io/nativ/) — 131 points, 53 comments
8. [智能体集群与新模型经济学](https://cursor.com/blog/agent-swarm-model-economics) — 84 points, 37 comments
9. [谁在害怕中国模型？](https://stratechery.com/2026/whos-afraid-of-chinese-models/) — 68 points, 56 comments
10. [我与理性主义社区的分歧](https://lcamtuf.substack.com/p/my-falling-out-with-the-rationalist) — 52 points, 38 comments

---
*新闻来源：BBC / TechCrunch / HN | 股市数据：NASDAQ / Yahoo Finance | 抓取时间：2026-07-21 09:03 AEDT*