求翻译：Step two: with one hand thumb and index finger grip handle rotation UFO, Gently press the bottom of the flying saucer in the center of a transparent plate to maintain the verticality of UFO and chassis, with a violent rotating What UFO handle UFO in the transparent plate to the center of a steady and rapid rotation. (Rotational step with some difficulty, be patient and repeated practice to master the spin trap technique.)是什么意思？

待解决 悬赏分：1 - 离问题结束还有