on duty

基本解釋

She goes on duty in half an hour.
半小時(shí)後她開始值班。
We have lifeguards on duty.
我們有救生員值班。
Maybe it’s because they drink alcohol while on duty.
可能是因爲(wèi)他們?cè)谏习鄷r(shí)間裡喝酒喝高了吧。

So the I.O.M.proposed that residents be required to get five continuous hours of rest for every sixteen hours on duty.
There is one military aid on duty every second of every day including overnight.
所以每天每秒鍾,包括整一個(gè)晚上,都有一個(gè)軍事助理值班。
普林斯頓公開課 - 國(guó)際座談會(huì)課程節(jié)選
It's always Milton's duty - this is the reason that he was put on this earth: to liberate a people from any such constraining customs.
彌爾頓的使命是,-他是爲(wèi)此才誕於世上：,將英格蘭民族從所有抑制人的傳統(tǒng)中解放出來。
耶魯公開課 - 彌爾頓課程節(jié)選