#新闻 NASA“毅力号”首次将贫瘠的火星大气转换成氧气
wgbh.org: MOXIE Has Pulled Breathable Oxygen Out Of Thin Martian Air.
https://www.wgbh.org/news/news/2021/04/23/moxie-has-puled-breathable-oxygen-out-of-thin-martian-air
wgbh.org: MOXIE Has Pulled Breathable Oxygen Out Of Thin Martian Air.
https://www.wgbh.org/news/news/2021/04/23/moxie-has-puled-breathable-oxygen-out-of-thin-martian-air
#新闻 上周世界范围内有记录的感染病例达570万例，新冠疫情或许已到了最严峻的时刻
Los Angeles Times: Coronavirus crisis: COVID-19 variants spur more deaths.
https://www.latimes.com/world-nation/story/2021-04-24/as-the-u-s-takes-a-hopeful-turn-covid-19-is-ravaging-the-rest-of-the-world
Los Angeles Times: Coronavirus crisis: COVID-19 variants spur more deaths.
https://www.latimes.com/world-nation/story/2021-04-24/as-the-u-s-takes-a-hopeful-turn-covid-19-is-ravaging-the-rest-of-the-world
Los Angeles Times
Bodies pile up as vaccine campaigns sputter and COVID-19 variants spread
In multiple countries, the COVID-19 pandemic has reached one of its bleakest points yet.