jet lag
搭长途飞机产生的时差
I get jet lag for a week after traveling overseas.
我出国旅游之后一周都会有时差。

get settled
安顿好
We want to get settled before we go out tonight.
我们今晚出去之前最好先做好准备。

have the hots for...
迷恋某人
Did you hear that Kelly has the hots for Robby?
你有听说凯莉在迷恋罗比吗？

goof around
做愚蠢的事情取乐
The teacher yelled at us for goofing around in class.
老师对我们大吼大叫只是要在班上耍人取乐罢了。

Now that you mention it,...
既然你提到了...
Now that you mention it, I am getting hungry.
既然你提到，那我肚子饿了。