On duty
其它 Other值班, 上班\\n[化] 值班
📝 例句
The rule is that someone must be on duty at all times.
按照规定，任何时候均需有人值班。
I had lifted my hand against a pilot on duty.
我打了一个值班的掌舵。
Some nurses at the hospital are on duty all night.
这个医院的一些护士整夜值班。
Inside I saw the head nurse, who said Miss Barkley was on duty.
我在里面见到护士长，护士长说巴克莱小姐现在上班。
Half the garrison is/are on duty.
有半数卫戍部队在执勤.
🧩 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;
🗣️ 情景例句
It is nice of you to invite me to the party tonight.
你真好，邀请我参加今晚的聚会。
No. We're supposed to go to the movies.
不，我们决定去看电影了。
'At ten to eight.I bought a paper and waited for the train.'
“7点50分。我买了张报纸，等着车来。”