.compulsion / kmpln; kmpln/ n (to do sth) 1 U compelling or being compelled 强迫; 强制; 被迫: I refuse to act under compulsion, ie because I am forced to. 我决不能让人逼着做事. * You need feel under no compulsion to accept, ie do not have to accept. 你不必勉强接受. C urge (esp to behave in an irrational way) that one cannot resist （不能克制的）慾望, 冲动, 要求（尤指不合情理的行为）: a compulsion to destroy things 毁物慾.should have done只用于谈论过去情况，主要有两个用法：用于推测过去已经发生的情况。如：He should have arrived by now.此时他本该到了。用
