Pitchblende and chalcolite are much more radioactive than uranium itself.沥清铀矿和铜铀云母比纯铀的放射性强得多.Chalcolite ( crystallized phosphate of copper and uranium ) is about twice as radioactive as uranium.铜铀云母 ( 铜和铀的磷酸盐结晶体 ) 的放射性是铀...
No one knows how many people currently surf the Net.没人知道现在有多少人在网上冲浪。I sometimes get up at three or four in the morning and I surf the net.“我有时候早上三或四点起床,在网上冲浪. ”B : Yes. By the way do you often surf the Net?是的,顺便问一下,你经常上网...
Suddenly Lennie's eyes centered and grew quiet, and mad.伦尼的两眼忽然发直,人静下来却气得不可开交.Lennie squirmed under the look and shifted his feet nervously.伦尼被他看得非常不自在,两脚左移右挪.He didn't have to take after Lennie.他用不着拿伦尼作出气筒.Nor...