1. In retrospect, that was clue number two.回想起來，那是第二條線索。

in retrospect回想過去，回想起來

e.g: In retrospect, I wonder if we should have done more.回想起來，我想我們是否應該做得更多。

2. Doesn't concern you.跟你無關。

這里concern相當于about。

e.g: This study concerns couples' expectations of marriage.這個研究是關于夫妻對婚姻的期待的。

3. Don't get cocky. 別翹尾巴。

cocky驕傲，自大，一般很讓人討厭

e.g: He's a cocky little man and I don't like him.他是一個自大的小男人我不喜歡他。

4. OK, let me get this straight.好，讓我理下思路。

get sth. straight 理清思路，了解事實，搞清楚

e.g: I wanted to get the facts straight.我想弄清事實。