gearing
n. 齿轮装置;传动装置;资本配比; v. 使变速;使调档;使适合(gear 的现在分词)
n.传动装置
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n. 齿轮装置;传动装置;资本配比; v. 使变速;使调档;使适合(gear 的现在分词)
n.传动装置
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