The school grounds must be a flexible zone enabling play, movement, running and jumping.

学校操场必须是灵活的区域，能够用来游戏、运动、跑步和跳跃。

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The school grounds must be a flexible zone enabling play, movement, running and jumping.

学校操场必须是灵活的区域，能够用来游戏、运动、跑步和跳跃。

youdao