有没有on guard

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有没有on guard
有没有on guard

有没有on guard
on guard
on guard:
a.值班(警戒)
例句与用法:
1.While danger threatens we must all be on guard.
危险正逼近,我们必须保持警惕.
2.There are soldiers on guard at the gate.
大门口有士兵在守卫.
3.Be on guard when somebody flatters you.
有人奉承你时,一定要当心.
4.The citizens were warned to be on guard against a sudden night attack.
市民们得到通知,要提防夜间的突然袭击.

有的
在守卫

yes there is on guard-
the meanings are provided in the first and second answer
I also say this in fencing when I'm about to strike

on guard adv.
在岗, 警惕