iron tie

例句：

1. 1. The man was wearing a heavy iron chain around his neck.
   这个人脖子上围着一条沉重的铁链。
2. 2. The iron ring on the door handle is rusted and needs to be replaced.
   门把手上的铁环生锈了，需要更换。
3. 3. The iron chain was used to secure the gate during the storm.
   在暴风雨期间，这根铁链被用来固定大门。