day-and-night duty 中文意思是什麼
day-and-night duty
解釋
晝夜值勤-
Define an alert zone and take emergency measures. maintain duty and patrol day and night. those who have unsafe houses should sleep elsewhere
明確一個警戒區並採取緊急措施。白天晚上保持值班和巡邏。房子不安全的人應睡到其它地方。
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