unpeg

例句：

1. 1.The screws on the door were unpegged, so it wouldn't open.
   门上的螺丝没拧紧，所以打不开。
2. 2. She had to unpeg the bolts before she could move the furniture.
   她得先把螺栓拧开才能移动家具。
3. 3. He used an unpeg to hold the heavy box together.
   他用一个螺丝刀把重箱子固定在一起。