| 摘要 |
A bicycle derailleur comprises a base member, a link mechanism coupled to the base member, and a chain guide coupled to the link mechanism so that the chain guide moves relative to the base member to move a chain among a plurality of sprockets. The base member comprises a first portion structured to mount to a bicycle frame and a second portion structured to mount to the link mechanism, wherein the first portion and the second portion are structured to move relative to each other.
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