take charge of
1．take the management of；become responsible for 负责
Professor Smith takes charge of the literature class．史密斯教授负责文学班。
The secretary took charge of the matter until her boss returned．秘书负责这件事直到老板回来为止。
She offered to take charge of all the arrangements for the conference．她主动提出来负责会议的一切安排。
2．assume control of控制
When the fire started，the police and firemen quickly took charge of the situation．着火时，警察以及消防队员很快就控制了火势。