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knuckle ball

不旋转球

指节变化球

慢速变化球

1、蝴蝶球

两位投手能克服年龄和性别差距联系到一起，全靠蝴蝶球(Knuckle ball)。以内野手加入美国大联盟的威克菲尔，在得到一位球探“以这种实力，很难升到AA联盟以上级别”的忠告后，转型蝴蝶球投手，并在19...

steering knuckle upper ball stud转向节主销上球头

steering knuckle lower ball stud转向节主销下球头

butterfly or knuckle ball蝴蝶球

A knuckle ball球手投出的

knuckle ball knuckler慢速变化球

steering knuckle tie rod ball转向关节系杆球端

体育

n.a baseball pitch thrown with little speed or spin

同义词：knuckleballknuckler

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