set something in motion

US /set ˈsʌmθɪŋ ɪn ˈmoʊʃən/
UK /set ˈsʌmθɪŋ ɪn ˈmoʊʃən/
"set something in motion" picture
1.

启动, 开始, 使…运转

to start something, especially a process or a series of events

:
The new policy will set in motion a series of changes.
新政策将启动一系列变革。
He set in motion a plan to reorganize the department.
启动了一项重组部门的计划。