for pity's sake
1. 务请
For pity's sake be quiet for a moment and let me finish my paper.
请安静一会, 让我把论文写好。
have/take pity on
1. 怜悯
The old lady often takes pity on small animals.
那位老太太常常怜悯小动物。
more's the pity
1. 遗憾
I won't be able to come to dinner today, more's the pity.
今天我不能赴晚宴, 十分遗憾。
out of pity
1. 出于怜悯
I don't want anybody to help me out of pity.
我不要任何人出于怜悯来帮助我。