ˌtour of ˈduty noun (plural tours of duty) [countableC]
BECPERIOD OF TIMEa period of time when you are working in a particular place or job, especially abroad while you are in the army etc 工作期;〔尤指军队中派驻海外的〕服役期
Examples from the Corpus
tour of duty• But Mr Sandy found it a stimulating, not to say exhausting, tour of duty.• Her tour of duty is almost done.• He said his tour of duty ended at 10: 45.• The two had enjoyed a eight-month affair, but McAllister's tour of duty in Ulster was ending.• I am here for a year, and this is my secondtour of duty.• During a recent three-year tour of duty as a newspapercorrespondent in the MiddleEast I found abundantcause for both.