"Otherwise you have the really problematic bottom line, which is that the Central Intelligence Agency is running a program that is killing significant numbers of people and there is absolutely no accountability in terms of the relevant international laws,".

VOA: standard.2009.10.27

It's a fascinating argument, but the bottom line is this.

这是一个吸引人的论证，但是底线是。

耶鲁公开课 - 文学理论导论课程节选

But like the bottom line, if you read a lot, then you'll start to understand.

如果你读得多了，你基本就能弄明白了。

英语为什么这么难呢？ - SpeakingMax英语口语达人