- chain
 - [tʃein]
 - n. 链;束缚;枷锁
vt. 束缚;囚禁;用铁练锁住 
反义词
           - v. unchain
 
参考例子
           - 1.He chained his bike to the fence.
 - 他用链条把自行车拴在栅栏上。
 
- 2.I need a chain and a bracelet.
 - 我需要一条项链和一个手镯。
 
- 3.Which food chain is correct?
 - 哪项食物链是正确的?
 
英文解释
           - n.
 - 1.a series of things depending on each other as if linked together
 - 2.(chemistry) a series of linked atoms (generally in an organic molecule)
 - 3.a series of (usually metal) rings or links fitted into one another to make a flexible ligament
 - 4.a number of similar establishments (stores or restaurants or banks or hotels or theaters) under one
 - 5.anything that acts as a restraint
 - 6.a unit of length
 - 7.British biochemist (born in Germany) who isolated and purified penicillin, which had been discovered
 - 8.a series of hills or mountains
 - 9.a necklace made by a stringing objects together
 
- v.
 - 1.connect or arrange into a chain by linking
 - 2.fasten or secure with chains
 
网络释义
               - chain
 - 链条; 链条槽; 传输链,信道; 电路;
 
- chain debts
 - 三角债; 叁角债; 三角学债;
 
- Value chain
 - 价值链; 價值鏈; 价值链; 价值鍊;
 
- Chain Lightning
 - 连锁闪电; 连环闪电; 闪电链; 链状闪电;
 
- Food chain
 - 食物链;