foot screw

例句：

1. 1. The car was fixed with afoot screw.
   这辆车是用一个脚螺钉固定的。
2. 2. The door was held together with afoot screw.
   门是用一个脚螺钉固定在一起的。
3. 3. He tightened the foot screwto secure the door.
   他拧紧了脚螺钉来固定门。