固定物

例句：

1. 1.The car is fixed with a new engine.
   这辆车安装了一个新的引擎。
2. 2. The screws are holding the table together.
   螺丝将桌子连接在一起。
3. 3.The bolts were used to fix the roof on the house.
   螺栓被用来固定房子的屋顶。