spring tup

例句：

1. 1. The spring in the air is refreshing.
   空气中的弹簧让人感到清新。
2. 2.The spring tup has been working perfectly since it was installed.
   弹簧装置自从安装以来一直工作得很好。
3. 3. The spring tup is responsible for lifting the car when you press on it.
   弹簧装置负责在您按下它时抬起汽车。