tighten up
绷紧, 加强
例句与用法：
The police are tightening up on drunken driving.
警方目前采取严厉手段对付醉酒驾车行为。
He says he will take step to tighten up the administration.
他说他将采取措施加强行政管理。
1. 使变紧; 使更牢固
It needs tightening up.
它需要拉紧一些。
2. 使更严格; 使更有效
He said he would take steps to tighten up the administration.
他说他将采取措施加强行政管理。