double shackle

例句：

1. 1. The prisonerwas chained to the wall with adouble shackle.
   囚犯被用双重锁链绑在墙上。
2. 2. The detectivefound the clue in the double shackle of the safe.
   侦探在保险箱的双锁链中发现了线索。
3. 3.The thief tried to escape but wasquickly caught by the policeman with adouble shackle.
   小偷试图逃跑，但很快被警察用双重锁链抓住。