装皮带

例句：

1. 1. He carefully installed the new belt on his bike.
   他小心地将新的皮带安装在自行车上。
2. 2. The mechanics were busy installing the new brakes on the car.
   机械师们正在忙着给汽车安装新的刹车。
3. 3. She had to install a new belt for her car before it broke down.
   她的车在出故障之前，她不得不为它安装一个新的皮带。