名词
中文翻译：Unknown
同义词：
['roll', 'tumble', 'roll over', 'roll around']
例句：
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1. The dog was rolling in the grass after it got out of the pool.
狗在从泳池出来后正在草地上打滚。
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2. The children were rolling around on the playground in the sun.
孩子们在阳光下在操场上打滚。
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3. The ball rolled into the net when the player missed the shot.
球员投失时球滚进了网里。