step-in
US /stɛp ɪn/
UK /stɛp ɪn/
短语动词
介入, 插手
to become involved in a difficult situation in order to help or make it stop
示例:
•
The government had to step in to prevent a financial crisis.
政府不得不介入以防止金融危机。
•
When the argument got heated, their friend decided to step in.
当争论变得激烈时，他们的朋友决定介入。