K-9:knock someone's door 上门拜访
A:Tom and I have broken up.
A:我和汤姆吹了。
B:Really? I'm afraid that he can't face the music.
B:真的？恐怕他没法面对这个现实。
A:I've said all there is to say to him. I don't want him to knock my door again.
A:我已经把该讲的话都对他讲了，让他别再来找我了。
B:It seems that I must go to his home and cheer him up.
B：看来我得去他家安慰他一下了。
