• 基本释义

1.be on guard against
警惕收藏指正
2.They seemed on guard.
他们看来有警惕。收藏指正
3.be on guard duty
担负警卫任务收藏指正
4.The sentry is on guard
那哨兵在担任警戒。收藏指正
5.They should be certainly on guard .
他们早该防范一些的。收藏指正
6.always on guard against shadowing submarines.
时刻警惕跟踪的潜艇。收藏指正
7.be on guard; keep a lookout
防范收藏指正
8.Be on guard when somebody flatters you.
有人奉承你时, 一定要当心。收藏指正
9.Put none but Americans on guard tonight.
今夜只让美国人担任警戒。收藏指正
10.on guard against con artists; must remain on your guard in such a situation.
警惕反对派艺术家；在这种情况下必须保持警惕。收藏指正
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