Researchers say they have found a way to extend the storage life of a drug used to treat H.I.V.

VOA: special.2010.05.24

French universities are named very poetically, Paris I,II,III,IV,V,VI, all the way through XIV, which is a real hole, or XIII is probably the worst.

巴黎的大学命名得都很有诗意,巴黎第一大学,第二大学,第三大学,以此类推,一直到第十四大学,这是真实存在的,第十三大学可能是最差的

耶鲁公开课 - 1871年后的法国课程节选

take the derivative of this, get the velocity vector and you notice his magnitude is a constant Whichever way you do it, you can then rewrite this as v square over r.

对这个式子求一次导,就能得到速度矢量,你会发现其模长是常数,不管用什么方法,加速度也可以写成 v^2 / r

耶鲁公开课 - 基础物理课程节选

That way,H.I.V.-infected women could have plenty of time to get the pouch from a health care provider early in their pregnancy.

VOA: special.2010.05.24