screw for motor starter

例句：

1. 1. He used a screw to hold the door shut.
   他用螺丝把门关紧了。
2. 2. The screw is too tight to be removed without tools.
   这个螺丝太紧，没有工具无法拆卸。
3. 3. The screw was rusted and needed to be replaced.
   螺丝生锈了，需要更换。