关节 指关节 指节 膝关节 肘英释中释
Her knuckles whitened as she gripped the gun..她紧紧握着枪，指关节都发白了。
steering knuckle,转向关节
knuckle down,屈服；开始认真工作
near the knuckle,[口语](笑话等)近乎猥亵的，近乎下流的，近乎粗鄙的
knuckle sandwich,对准嘴的一拳
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