connecting chain

例句：

1. 1. Theengineer used a connecting chain to connect thetwo pieces of metal together.
   工程师用连接链将两块金属连接在一起。
2. 2. The policeofficer used a connecting chain to secure thedoor after it was locked.
   警察用连接链在门被锁后将其固定。
3. 3.The scientist used a connecting chain to measurethe length of the cable.
   科学家用连接链来测量电缆的长度。