Often it's a salt called phosphocholine and so you get a phospholipid that's made of choline and two lipid chains.

它通常是一种叫磷酸胆碱的盐,这样你就得到了一种,由胆碱和两条脂肪链构成的磷脂

耶鲁公开课 - 生物医学工程探索课程节选

But you probably should use often because hey, who doesn't get frustrated?

但你也许该多多运用它，因为毕竟，谁不会感到沮丧呢？

I'm frustrated 课堂 - SpeakingMax英语口语达人

Whenever your church would get a copy of one of these letters from Paul,you would have scribes,often slaves, because slaves were especially trained to be scribes.

当一个教会得到保罗书信的一份副本时,你就要让抄写员，他们通常是奴隶，因为奴隶被专门训练成为抄写员。

耶鲁公开课 - 新约课程节选

Then as the eighteenth century wears on, you begin to get the sense as is well known and I think often overstated you begin to get a cult of genius.

8世纪逐渐过去,浪漫主义的出现,开始涌现出一大批天才。

耶鲁公开课 - 文学理论导论课程节选

In case any of you would like to get involved in research there are very often colleagues of mine or graduate students who are doing interesting projects who will ask me to alert you to the possibilities of working with them.

如果你们希望参与研究,我的同事和我带的研究生,正在做一些很有意思的项目,他们会让我把这些信息告知你们

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

But even then, that may not be enough."-- Because once you don't get tenure in one place, you don't go up in terms of the ranking of the school-- you very often would get tenure but elsewhere, school that is not considered as good as the one where you were rejected.

即使到了那时，可能也不够-,如果在一所学校无法获得终身职位，就没有可能在更高学府取得-,经常是在别的院校获得，那些比拒绝你的学院,差一等的院校。

哈佛公开课 - 幸福课课程节选

You have to inject it multiple times because the first blip that you get in immune response is not very high, you have to boost and often you have to boost again in order to get a high enough response to be protected.

你必须得进行多次注射,因为第一次注射,无法使免疫系统产生强烈反应,你得要增强免疫,通常还得再增强一次,以使反应足够强烈,从而起到保护作用

耶鲁公开课 - 生物医学工程探索课程节选