最后，介绍3个un-加在名词上生成动词的例子。

unchain [ un-= to free from 由…解脱；chain n. 锁链→]v. free from chains; set free 给…解开锁链；解放，释放 / They worked like slaves in the mine until the revolution unchained them.他们在矿井里像奴隶般劳动，直到那场革命解放了他们。

uncover [ un~ = to remove 取走;cover n. 盖子→]v. remove the cover from; make known or reveal 揭开…的盖子；使知道，揭露 / The plot was uncovered by a child by accident. 那阴谋是被一个小孩偶然揭露的。

unman [ un- = to deprive of 剥夺；man n. 男子汉→] v. deprive of the qualities of a man; weaken the spirit of 使失去男子汉气质；使懦弱/ He was unmanned by fear. 恐惧使他成了儒夫。

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