On guard
其它 Other在岗, 警惕
📝 例句
Be on guard against those who are jealous of your success.
要提防那些嫉妒你的成功的人。
He is most free from danger, who even when safe, is on guard.
居安思危，最为保险。
We must be on guard not to let the enemy spies worm in.
我们必须警惕,不让敌特钻进来。
The man below there are always on guard.
下面的人又总是片刻不离地守着。
And right off I was on guard against Mencken's books.
我马上就对门肯的书警觉起来了。
🧩 词语组成解析
on
[ɑn]
prep. （表示方向）向;（表示对象）对;（表示位置）在…上;（表示时间）在…之时;
adv. （放，穿，连接）上;向前，（继续）下去;
adj. 活动着的情况，状态;使用着的;发生着的;计划中的;
guard
[ɡɑrd]
n. 警卫;狱吏，看守;护卫队;防护装置;
vt. 保卫，守护;看守;加防护装置;谨慎使用;
vi. 警惕;警卫;
🗣️ 情景例句
These are the models from the Japanese film maker.
这些是那位日本电影制片家那里的模型。
A tattler is worse than a thief.
搬弄是非者，恶劣甚于贼。
Oh, listen to the loudspeaker. I think Mr. Hu is going to tell us the result right now.
哦，请听广播。我想胡先生马上就要宣布比赛结果。