这就是为什么我们经常看到斑马成群结队地行走和奔跑。
That's why we often see zebras walking and running in groups.
我们想了解肢体结构是如何决定步行和奔跑时的能量消耗。
We want to understand how limb design determines the energy costs of walking and running.
给孩子们机会体验不同种类的动作，比如慢动作、定身游戏，舞蹈、蹦跳和奔跑。“我要播放几种音乐。”
Give children opportunities to experience various types of movement like slow motion or freeze games, dancing, hopping, running; "I'm going to play several kinds of music."
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