thumb screw

例句：

1. 1. The tool is designed to be easily removed with a thumb screw.
   这个工具设计成可以用拇指螺丝轻松拆卸。
2. 2.The car's engine compartment was sealed with a thumb screw.
   汽车的引擎舱是用一个拇指螺丝封住的。
3. 3.The screwdriver has a thumb screw on the end for easy removal.
   螺丝刀末端有一个拇指螺丝，便于快速拆卸。