exerciser for wrist roll 腕关节转动训练器
It also responds to shoulder, elbow, and advanced wrist movements (including pitch, roll, and yaw), more than ever before.
它可以做出肩、肘以及腕部的复杂动作(包括上下翻动、左右摇晃以及侧向移动)，这在以前是不曾有过的。
From this point there is no need to roll the wrist and forearm, the ball is gone.
从这点，没有需要要卷动手腕和前臂，球就去了。
Between these actions, the wrist must roll.
在这些行动，手腕必须卷起。
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