处于幸运的境地
Pretty 有“美丽、机灵”的意思，sitting pretty作为一个习惯用语，它的意思并不是具体地说一个人坐在那里很漂亮。Sitting pretty作为习惯用语的真正含义就是一个人处于优势的地位；各个方面的条件都对他有利。
例如：
A: I heard that Michael and Jennifer got a good price when they sold their house.
我听说迈克和詹妮弗的房子卖了个好价钱。
B: Yes, they did. Now they're really sitting pretty. As a matter of fact, they're thinking of going on a long vacation.
是啊。他们运气真的很好。事实上，他们正打算休个长假呢。