on duty
US /ˈɑn ˈduː.ti/
UK /ˈɑn ˈduː.ti/
フレーズ
1.
勤務中, 当番で
working, especially when one is a police officer, a soldier, or a medical worker
例:
•
The police officer was on duty for twelve hours.
警察官は12時間勤務中だった。
•
Nurses are always on duty, even on holidays.
看護師は祝日でも常に勤務中だ。
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