noun
chain
/tʃein/
chain 是什么意思
链，枷锁，用铁练锁住，囚禁
A series of things depending on each other as if linked together (chemistry) a series of linked atoms (generally in an organic molecule) a series of (usually metal) rings or links fitted into one another to make a flexible ligament (business) a number of similar establishments (stores or restaurants or banks or hotels or theaters) under one ownership.
词性
noun
难度
进阶
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