Verb:

1. tie up with chains;

   "chain up the prisoners"
   

chaine经纱chainn.束缚；链条；链；(一)连串；连锁店（常用复数）vt.束缚；用铁链锁住chain bridge链缩桥,链桥chain roller链传动轮chaining pin测钎chain smokern.连续抽烟的人chained file链接文件chained list链式表,系列性表格,链接表,链结串列,连接表chain pliers链条钳chain supply供应链chain pulley链轮chain matrix链接矩阵

1. Release the dog. He has been chained up for hours.
   把狗放开，它已被拴了几个钟头了。