keep guard

基本解释

All of them are kids? Why do they have got to keep guard for the kids?
都是小孩子吗？天使为什么要守着小孩呢？
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The policemen keep guard at the airfield and watched every body carefully.
警察们马上在停机场守候，并且仔细的盯着每一个人。
And thewriting said this: "Son of Cambyses, over thee the gods keep guard, forotherwise thou wouldst never have come to so much good fortune.
那纸上面这样说：“冈比西斯之子，你的头上有神在护佑，否则你永远也不会有这么多的好运气。你是否想过去报复杀你的凶手阿斯提阿格斯？

She says people must keep up their guard against the virus, which is unpredictable and could change into a far more dangerous form.

Another one taxes businesses on the generators they keep to guard against power cuts.
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Nonetheless, the United States will probably keep its guard up until Brazil establishes a clearer record in foreign policy.
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Second, private prisons sometimes have lower costs, if they can keep prison-guard unions at bay.
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