挪威北部斯瓦尔巴群岛上的齐柏林研究站上周记录的二氧化碳气体水平最高值超过397个百万分点,比2008年的水平增加了2.5个百万分点。
Levels of the gas at the Zeppelin research station on Svalbard, northern Norway, last week peaked at over 397 parts per million (PPM), an increase of more than 2.5ppm on 2008.
赢得Mega Millions头奖的几率约为一亿七千六百万分之一,而个人被雷击中的几率为七十五万比一,我们可以两相比较一下。
The chance of winning the Mega Millions jackpot is about one in 176m. For comparison, an individual’s chance of being struck by lightning is around one in 750,000.
光速行走这样的距离需时0.0024秒,但是这些中微子却比光速快了60纳秒,也就是百万分之60秒到达目的地。
Light would have covered the distance in around 2.4 thousandths of a second, but the neutrinos took 60 nanoseconds - or 60 billionths of a second - less than light beams would have taken.
应用推荐