版块 云笔记 下的文章

美国十二万人感染新冠病毒

BBC News

The number of coronavirus related deaths in the United States has surged past 2000, doubling within just two days. Johns hopkins University, which is monitoring the spread of the virus, said the number of infections has reached 120,000. A quarter of the deaths are in New York State.

决定性别的染色体

XY chromosomes

So my next stop on the weird world of X and Y, or things feeling a little topsy-turvy, is 1985. The World University Games were set to happen in Japan, and the Spanish hurdler María José Martínez-Patiño was scheduled to run. She was like a hot shot, a rising superstar.

欧美航空公司面临倒闭

BBC News

French voters will go to the polls shortly to cast their ballots in local elections. There’s considerable unease that the voters going ahead while the country battles a coronavirus pandemic that’s prompted the government close bars, restaurants, cinemas and many shops. Some politicians have called for a postponement.

怎样辨别假威士忌

Whiskey Fraud

我们前些年注意到市面上有很多假威士忌,苏格兰大学环境研究中心的戈登库克说。苏格兰威士忌是苏格兰特产,而我们作为苏格兰的一家放射性碳实验室,深感责任在肩。苏格兰威士忌的原料是大麦,大麦生长过程中会吸收空气中的二氧化碳,大多数是碳十二,有很小一部分是放射性同位素碳十四。