That will lead us into a discussion of sort of modern methods and sort of the spectrum of methods that are available now for vaccine development.

而这使得我们有必要对于,在现代疫苗的发展中,可供使用的方式方法进行讨论

耶鲁公开课 - 生物医学工程探索课程节选

I have never had any myself and I don't plan to unless I need to maybe in the future.

我自己没有整过。在将来，除非有必要，我也不打算去整容。

整容是个人自由 - SpeakingMax英语口语达人

They're interesting biological reasons for that, but certainly it's relevant, and it's important of course for physicians to be aware of this when they're screening overweight people for Diabetes given that excess risk in the women.

这些生理因素很有趣,也很有意义,考虑到女性的患病风险更高,医生们在为超重人群检查糖尿病时,很有必要注意到女性的患病风险

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So it's worth looking on the internet for anything that's going on at the moment.

所以很有必要在互联网上查看什么在上映。

看表演很好 - SpeakingMax英语口语达人

Because sometimes it's useful to think about the payoffs, as coming from "i's" own choice and everyone else's choices.

因为有时候考虑在i和对手,在不同选择下的收益是很有必要的

耶鲁公开课 - 博弈论课程节选