全部

1·He unbolted the shackles on Billy's hands.

他打开比利的手铐。《柯林斯英汉双解大词典》

2·The door unbolted, whacked back against the wall.

门打开时，吧嗒一声门儿碰着墙。

3·The thief attempting to purloin a steel cable from a lift shaft - and unbolted it while standing in the lift which then plummeted to the ground, killing him.

试图偷自动升降梯钢缆的贼。他站在电梯中时打开了钢缆，随后电梯猛然坠落致其死亡。

4·Thee thief attempting to purloin a steel cable from a lift shaft - and unbolted it while standing in the lift which then plummeted to the ground, killing him.

试图偷自动升降梯钢缆的贼。他站在电梯中时打开了钢缆，随后电梯猛然坠落致其死亡。