In the gymnasiums of Beijing and Shanghai, there were grounder competitions.上海 、 北京都有健身房里玩地滚球的比赛.The grounder went for a hit, and Damon scooted to third.当这滚地球穿出内野, 大门直奔三垒.Maiga: The International Grounder Federation was ...
Lasers promise to change this by making isotope separation easier, and cheaper.激光可以改变这种局面,从而使同位素分离变得比较容易 、 比较廉价一些.This indium isotope was created at the same time as the earth.这种铟同位素与地球产生在同一时代.The isotope ratio is direct...