英语词组on duty是什么意思，短语翻译、用法及例句-英语词组固定搭配大全

词组	on duty
释义	on dutyadj. phr.Doing one's job; supervising. 在上班；在值班。◆ Two soldiers are on duty guarding the gates.两名士兵正值班守卫着大门。
随便看	grin from ear to ear gross out gross-out session ground floor ground rule ground zero grow accustomed to growing pains grow on grow on or grow upon grow out of grow up grow upon gulp down gum up gun for gung-ho guns guns and butter guns before butter guns or butter or guns and butter or guns before butter gut feeling gut reaction gut talk had better

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