single shoulder spring bar

例句：

1. 1.This single shoulder spring bar is perfect for supporting the weight of a heavy object.
   这个单肩弹簧杆非常适合支撑重物的重量。
2. 2.The engineer used this single shoulder spring bar to adjust the angle of the machine.
   工程师使用这个单肩弹簧杆来调整机器的角度。
3. 3.The construction worker used this single shoulder spring bar to lift the heavy concrete block.
   建筑工人使用这个单肩弹簧杆来抬起沉重的混凝土块。