名词
中文翻译：愉快
同义词：
['merriment', 'mirth', 'jollity']
例句：
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1. The performance was a great source of gaiety for the audience.
这场表演为观众带来了极大的欢乐。
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2. His laughter was infectious, bringing joy to everyone around him.
他的笑声感染了周围的人，给每个人带来了快乐。
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3. The children were filled with gaiety as they played in the park.
孩子们在公园里玩耍时充满了欢乐。