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
I do agree.
我同意。
He that lies down with dogs must rise up with fleas.
近朱者赤，近墨者黑。
Excuse me, please! Which is the way to the North Street Hospital?
请问，去北街医院怎么走？