rack off
phrasal verb with rack verb [ T often passive ] uk/ræk/ us/ræk/
Australian English informal
滚，滚开
to leave or go away, used especially as a rude way of telling someone to go away
If you don't like Sydney, rack off. All you are doing is whinging. 你要是不喜欢悉尼就滚蛋，你只会在这里抱怨。