"Knock off" 是澳国的俚语。我觉得别的英语国家不用它。
"Knock off" is Australian slang. I don't think people from other countries use it.
英语没有‘上班‘和’下班‘的字。"我们用两个字表达它们。
English has no word for '上班' and ‘下班’. We express them with two words.
上班 = Start work/go to work
下班 = Leave work/finish work
Sorry for the double post! I just thought I'd add more detail.