在崎岖的道路上行走，才会知道前进的艰辛。
不要往回走，在某种程度上便是前进，人们必须要行走，至少在他们跳舞之前是这样的。
Not to go back, is somewhat to advance, and men must walk, at least, before they dance.
能够在不同工作状态下，快速、慢速行走，只需一个人操作便可在空中连续完成上下、前进、后退、转向等所有动作。
In different working conditions, fast, slow walk, only one person can be in the air continuously complete upper and lower, forward and backward, turning all the action.
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