The goal of this drill is to get you used to perfect foot placement at the highest rates of rotation from your body 这个技能练习的目的是让你习惯于以较高的概率落脚在恰当的位置。
2.
Whether the dynamo operates globally ( rather than in limited regions ) would depend on whether the star ' s rate of rotation was comparable to its rate of convection 是否能让整个星体成为一部发电机（而非在小块区域内各自产生发电机作用） ，端看这颗星球的自转速率是否和其对流速率相当。
