stub shaft drill

例句：

1. 1. The engineerused a stub shaft drill to borethrough the concrete wall.
   工程师使用一个钻头式钻具来钻透混凝土墙。
2. 2.The carpenter used a stubshaft drill to make holes for the screws.
   木匠使用一个钻头式钻具来为螺丝打孔。
3. 3. The construction crewused a stub shaft drill to removethe old roof before starting the new one.
   建筑工人使用一个钻头式钻具来在开始新屋顶之前拆除旧屋顶。