clamping time

例句：

1. 1.The machine needs to be clamped for the next hour.
   这台机器需要在接下来的一个小时里被夹紧。
2. 2. The car was clamped down on the road by a policeman.
   一辆汽车被警察在公路上锁住了。
3. 3.The work took us two hours of clamping time.
   这项工作花了我们两个小时的夹紧时间。