single-end square straight wrench

例句：

1. 1. He used a single-end squarestraight wrench to tighten the bolt.
   他用单端方扳手来拧紧螺栓。
2. 2. The mechanic needed a single-endsquare straight wrench to remove thestuck screw.
   这位机械师需要单端方扳手来拔出卡住的螺丝。
3. 3. Thetool was designed for use with single-end square straight wrenches.
   这种工具是为使用单端方扳手设计的。