brown-noser 马屁精
brown-nose 拍马屁
The rest of the company were sick of watching him brown-nose.
全公司的人都受不了看他拍马屁了。

apple-polish 讨好，拍马屁
lick one's boots 阿谀奉承，谄媚，拍马屁
He'll lick the boots of anyone to get what he wants.
为了得到他想要的，他会拍任何人的马屁。
We should show him some respect, but there is no need to lick his boots.
我们应该尊重他，但是不必去阿谀奉承。

curry favor with sb 讨好；奉承；拍马屁
They want to curry favor with the president.
他们想拍总统的马屁。
Maybe they're trying to curry some favor.
也许他们想送点人情。

to suck up to sb 奉承，巴结
What is she sucking up to me for?
她这么讨好我是为了什么？
So you're just sucking up to this guy for his money?
所以你是为了钱才猛拍他马屁吗？