跟别的动物一样,我们会一直处于戒备状态,直到我们感觉安全了才放松。
on (one's) guard against 戒备;防备
off guard
不警惕;不提防
①When we go shopping, we should be on guard against pickpockets.
当购物的时候, 我们应该提防扒手。
②Don't be off guard! You mustn't tell anything to him.
不要放松警惕,你一定不要告诉他任何事情。
2.hold up支撑;承受住;延迟;阻碍;举起
[教材原句] One person then holds up his hand, palm outwards and five fingers spread.
然后一个人举起他的手,手掌向外,五指展开。
[一词多义] 写出下列句中hold up的含义
①Had it not been for the postal strike, my home letter might not have been held up.延误
②How does he hold up under such a responsibility?承受住
③They held up their coach to celebrate their winning.举起
④This old tree is held up by a post.支撑
hold on 挺住;坚持住;(打电话)别挂断
hold on to
抓紧;不放开;保留;坚持
hold back
阻挡;拦阻;隐瞒;控制
hold out
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