Nyguen says he has already used his savings to pay fishermen who can't fish and now he is contemplating working for BP - the first time he will work for anyone but himself.

VOA: standard.2010.05.15

So essentially, we have two ethene or ethylene molecules here to start with where these blue are our 2 s p 2 hybrid orbitals, so you can see that for each carbon atom, one is already used up binding to another carbon atom.

本质上，我们从两个乙烯分子开始,蓝色的是2sp2杂化轨道，你可以看到，对于每一个碳原子，其中一个已经用来和另外一个碳原子成键。

麻省理工公开课 - 化学原理课程节选

Well, one way to get proteins, and it was first used in Hepatitis B, is to find patients, find individuals who are already infected with Hepatitis B.

获得蛋白质的方法之一,也是首次用于制造乙型肝炎疫苗的方法,就是寻找患者,寻找到一些已经感染乙肝的患者

耶鲁公开课 - 生物医学工程探索课程节选

Economists point out that the current jobless rate is already higher than the hypothetical rate that was used to calculate the health of banks and other financial institutions in so-called "stress tests" earlier this year.

VOA: standard.2009.06.07

So, in all of this, what he does is he makes, to use an expression that I've already used before in the context of absolutism, he makes the Boyars, while he's building his navy and expanding Russia, he makes the Boyar junior partners in absolutism.

所以,通过所有的这些事情,用我之前用过的一个词来形容,他使得波维尔们,当他在建海军和扩张领土时,他使得波维尔贵族臣服在他的绝对权威之下

耶鲁公开课 - 欧洲文明课程节选