这是建立，粗动作，平衡与协调。

This builds, gross motor skills, balance and coordination.

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玩户外可以给机会，以建立粗动作技能，学习对象和我们的世界。

Playing outdoors can give opportunities to build gross motor skills, learn about objects and our world.

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在非均匀煤屑起动试验的基础上，对非均匀沙粗化过程中的起动作了探讨。

The threshold motion of nonuniform sediment is discussed by the experiment of nonuniform coal dust for threshold motion.

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