on guard的近义词是：cautious谨慎的；circumspect细心的。on guard的意思是警惕；站岗。on guard的读音是英[?nɡɑ?d]；美[ɑ?nɡɑ?rd]。
一、参考翻译点此查看on guard的详细内容
二、英英释义
"on guard against con artists"
"must remain on your guard in such a situation"
三、例句
He reported the murder to the police on duty.
他将凶杀事件告知值班。
There was no fireman on when the fire broke out.
火灾发生时没有消防队员在值班。
Keep a vigilant eye on the imperialist jackals.
对帝国主义的走狗要保持警戒。
Put none but Americans on guard tonight.
今夜只让美国人担任警戒。
四、词汇搭配
on guard的相关近义词
cautious、circumspect、on your guard
on guard的相关临近词
Onart、on、on-the-fly reassignment、On the Outline of Feuerbach、On the Character Word Sense、On the Gist of Constitution、On Moral Support of Charity、on-line mass spectroscopy、On Class Struggle and Crime、On Lexeme and Its Synchrony、On Equilibrium of Inflation