A tour of duty
值班, 值日勤务
🧩 词语组成解析
tour
[tuə]
n. 旅行，观光;巡回演出;任职期;轮班;
vt. 到…旅游;在…巡回演出;
vi. 观光;巡回;
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
That sounds like a good idea.
似乎是个好主意。
Why did you get up so early?
为什么你这么早起床？
It had been purchased by a local authority so that an enormous pie could be baked for an annual fair.
某地方当局买下它用来焙制一个巨大的馅饼为一年一度交易会助兴。