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It helps to transfer your power to the chain rings.
它可以帮助你的权力转移到链环。
youdao
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Consists of at least two sheath rings, which connected with at least one chain.
它包括有至少两个套环，在不同的套环之间连接有至少一根链条。
youdao
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Consists of at least two sheath rings, which connected with at least one chain.
它包括有至少两个套环，在不同的套环之间连接有至少一根链条。
youdao