1.off and on(on and off)断断续续地,间断
例句:The Jews and Arabs of Palestine have been fighting off and on for 100 years.
巴勒斯坦的犹太人和阿拉伯人已经断断续续地斗争了100年之久。
2.off campus 在校外
例句:Do you live on or off campus?
你住在校内还是校外?
3.off color身体不舒服,精神不好
例句:She felt a bit off color, but she's much better now.
她觉得有点不舒服,但是现在好多了。
4.off hand 即席的(地),没有准备的(地)
例句:I'm talking off hand, simply speaking my mind.
我这是信口开河, 随便谈谈脑子里想的东西。
5.off the hook 摆脱责任,脱离困境(或危险),脱身
例句:But let us not pretend that it lets us off the hook.
但是,让我们不要假装这样做我们就可以逃脱责任了。
6.under one's breath 压着嗓子,低声地
例句:Fortunately I said it under my breath, and hedidn't hear.
好在我说的声音很小,他没有听见。
adj. 已占用的;使用中的;无空闲的 v. 占有(oc