名词中文翻译
中文翻译：氢气球
同义词：
['hydrogen-filled balloon', 'hydrogen gas balloon']
例句：
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1. The children were playing with their hydrogen balloons in the park.
孩子们在公园里和他们的氢气球玩耍。
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2. The balloon was filled with hydrogen gas and would rise high into the sky.
这个气球是用氢气填充的，会升得很高。
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3. The balloon was released into the air, and it floated gracefully through the sky.
这个气球被释放到空中，它优雅地飘过天空。