Their migration may have been set in motion by an increase in population caused by a movement of peoples fleeing the desiccation, or drying up, of the Sahara.

他们的迁徙可能是人口增加引起的，这一人口增长是由人们逃离撒哈拉沙漠的干燥或干涸的迁移造成的。

youdao

So instead of developing the skill of movement, they proposed "protection" through all kinds of cushioning, stability, motion control, etc., shoes.

因此，他们鼓吹通过各种诸如缓冲、稳定或者动作控制等等的跑鞋，来提供“保护”，而不是在动作上提高技巧。

youdao

A manner, process, or method of performing an act or deed; habitual or vigorous activity or energy; movement; motion; a force that causes change.

一种态度、过程，或是一种采取动作和做事的方法；习惯、充足的活力或干劲；动作，行为，一种带来改变的力量。

youdao

Just as 2D is a special case of 3D, a still image a web page for example is also just a special case of video movement still motion.

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And both groups often restrict their own motion and movement by hiding behind a podium, or finding a safe corner of the stage and getting stuck there.

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"I'll have an idea -- an image of a horse race or a polo match -- and sketch it until I get something that has motion and movement, " he said.

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