短语词组短語gear shifter shaft lock 變速撥叉軸閉鎖器reverse gear shifter shaft 反轉齒輪變速軸gear shifter shaft locking ball 換擋撥叉軸鎖定球gear shifter shaft lock spring 變速撥叉軸閉鎖器鎖簧 返回 gear shifter shaft