名词
中文翻译：气球
同义词：
['balloon', 'helium balloon']
例句：
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1.The children were playing with their gas balloons in the park.
孩子们在公园里用他们的气球玩耍。
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2. The balloon was released into the sky and drifted away.
气球被放飞到天空并飘走了。
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3.The balloon was filled with helium gas to make it float higher.
气球被充入了氦气，使其能够升得更高。