a pain in the neck 讨厌鬼，烦心事      

【例句】
This job is really becoming a pain in the neck.
这件工作真的变得很麻烦了。

Don't tell me Christopher is coming, wherever he goes he's a pain in the neck.
不要告诉我克里斯托夫要来，不管他到哪里，他总是个令人讨厌的家伙。