take over/up the reins idiom
控制；接管（某东西，尤指某机构或国家）
to take control of something, especially an organization or a country
He took up the reins of government immediately after the coup. 在那次政变之后，他立即控制了政府。
Synonyms: check (LIMIT)constraintcontrol (POWER)curb (CONTROL)curtailmentlimit limitationrestraintrestriction