In my lab, we recently made a cancer nanodetector 在我的实验室，我们最近研制出了一种癌症纳米检测器， that is so small that it could travel into the body and look for tumors. 小到可以进入全身血液循环并寻找肿瘤。 We designed it to listen for tum
知名毕业演讲特辑之二：“脸书”首席运营官谢莉·桑德伯格首次公开谈及丈夫过世一事 Sheryl Sandberg's Powerful UC Berkeley Commencement Speech(Excerpt) Sheryl Sandberg made an emotional appeal for resilience and gratitude
A More Perfect Union 塑造一个更加完美的合众国 ( 2008年3月18日，宾夕法尼亚州费城) A MORE PERFECT UNION March 18, 2008 | Philadelphia, Pennsylvania “We the people, in order to form a more perfect union.” Two hundred and twenty
And we think it's for all of these reasons that they take more risks with things like alcohol and drug use; 基于以上理由，我们认为他们有更高的风险去做那些像酗酒、吸毒、 crash dieting; cosmetic surgery; unprotected, earlier sex
