Exactly how the differences in bacteria might make vaginally born babies less prone to allergies and asthma isn't yet clear, but it does point to a difference that researchers can look at going forward.

VOA: standard.2010.06.30

But a few verses later it's clear that the poet isn't really drowning: this is a metaphor for his difficult situation.

但是随后的几首诗证明了，诗人并没有真正的溺水：,这里的水象征着困境。

耶鲁公开课 - 旧约导论课程节选

So, for example, in around 1900 in America or a little bit earlier, let's say 1880 in America, it really isn't clear that it was illegal to write agreements to say we'll restrict quantities.

比如1900年甚至更早的美国,假如是1880年的美国吧,在当时这种限制产量的合同是否违法,在司法上没有明确的界定

耶鲁公开课 - 博弈论课程节选

Well, not now My death can't be bad for me now I'm not dead But it's not 100% clear that the other alternative isn't acceptable "? Why not say,"My death is bad for me when I'm dead"?

至少不是现在,死亡现在对我来说没有坏处,我又没死,但另一种情况我们也不能百分百,确定是不可接受的,为什么不能说，“死亡在我死的时候对我来说是有坏处的？

耶鲁公开课 - 死亡课程节选