chained program

例句：

1. 1.The prisoner was chained to the wall.
   那个囚犯被锁在墙上。
2. 2.The dog was chained to a gate.
   那只狗被锁在大门上。
3. 3. The prisoners were chained together in pairs.
   那些囚犯被锁在一起，成对儿。