尽管它们之间的联系还不完全明确，但知道这些就已经够了：检查一下你的胆固醇吧；如果过高，就跟医生一起把它降低。
While that connection is not fully understood, the take-home is clear: Get your cholesterol checked regularly; if it's high, work with your doctor to lower it.
在进化生物学中，一个不同的物种的定义并不完全明确。
In evolutionary biology, the definition of a distinct species is not entirely clear-cut.
我们并不完全了解生命的起源，似乎可以明确的是，肯定还有某些必要条件。
While our understanding of how life began is incomplete, it seems clear that there are certain requirements.
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