tail-gate chain

例句：

1. 1. The tailgate chain on the truck is broken, so we can't open the trunk.
   卡车的尾门锁链坏了，所以我们打不开后备箱。
2. 2.The tailgate chain is a common security measure for trucks and trailers.
   尾门锁链是卡车和拖车常见的安全措施。
3. 3. The tailgate chain was installed to prevent people from getting in or out of the truck without permission.
   尾门锁链被安装是为了防止未经允许的人进入或离开卡车。