开源日报 每天推荐一个 GitHub 优质开源项目和一篇精选英文科技或编程文章原文，坚持阅读《开源日报》，保持每日学习的好习惯。
今日推荐开源项目：《Google Guava》
今日推荐英文原文：《Google Maps adds a COVID-19 layer》
今日推荐开源项目：《Google Guava》传送门：项目链接
推荐理由： 谷歌Guava是一个顶级的通用Java库。与Apache Commons一样，它也是模块化的，包含许多独立的库。它涵盖了基本实用工具、集合、字符串操作、并发实用工具、图形库、散列等等。与Apache Commons library相比，Guava具有更好的设计。如果你想要创建或使用程序类库，可以首选Guava库。
今日推荐英文原文：《Google Maps adds a COVID-19 layer》作者：Corinne Reichert
原文链接：https://www.cnet.com/health/google-maps-adds-a-covid-19-layer/
推荐理由：截至美国东部时间22日11时23分（北京时间23时23分），美国累计新冠确诊病例超过686万例，累计死亡病例突破20万例。近期，美国新冠疫情指标又有抬头倾向，最近一周单日新增确诊病例和死亡病例均呈上升趋势。谷歌地图新添了有关新冠病毒的模块, 以帮助人们更好地做出出行决策.

Google Maps adds a COVID-19 layer

Google on Wednesday announced that it's added a COVID-19 layer to the Google Maps app, which offers critical information designed to help you decide where to go and what to do while still staying safe.

A color-coded system will show you the density of new coronavirus cases in any given area and a label will tell you whether cases are trending up or down there, Google said Wednesday.

The new info is visible for all 220 countries and territories available on Google Maps. You can see it at country, state, province, county and city level data, depending on the area.

Here's how to use it:

  1. Open Google Maps
  2. Tap the "layers" button on the top right corner of your screen (the area where you can switch to satellite or terrain views)
  3. Click on COVID-19 info
  4. A seven-day average of new coronavirus cases per 100,000 people will then show up for that area on the map.
Google says it's getting the data "from multiple authoritative sources, including Johns Hopkins, The New York Times and Wikipedia."

"These sources get data from public health organizations like the World Health Organization, government health ministries, along with state and local health agencies and hospitals," Google added in a blog post.
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