playtime

/ˈpleɪtaɪm/ 21
In a school for young children, playtime is the period of time between lessons when they can play outside. (学校里低龄孩子的)课间游戏时间

noun [抽象名词]游戏或娱乐的时间;开幕时刻

Any child who is caught will be kept in at playtime.
凡是被抓到的孩子在课间游戏时要被留在里面。

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