on guard基本解釋
警惕; 站崗; 防備…
on guard網(wǎng)絡(luò )解釋
1. on guard在線(xiàn)翻譯
1. 站崗,值班：on foot 步行;在進(jìn)行中 | onguard 站崗,值班 | on hand 現有;在手邊;臨近
2. 警惕,防范：on foot / / 步行 | onguard / / 警惕,防范 | on hand / / 在手邊,臨近
3. 站崗,警戒：on foot步行 | onguard站崗,警戒 | on purpose故意,有目的
on guard英英釋義
adj
1. vigilant
e.g. on guard against con artists
must remain on your guard in such a situation
Synonym: on one's guard(p)upon one's guard(p)on your guard