名词
中文翻译：欢乐
同义词：
['joy', 'happiness', 'merriment例句：1. She was overjoyed at the news of her promotion.（她听到晋升的消息时非常开心。）']
例句：
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1. She was overjoyed at the news of her promotion.
她听到晋升的消息时非常开心。
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2. The children enjoyed playing in the park for hours.
孩子们在公园里玩得很开心几个小时。
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3. Joy is a feeling that comes from doing something you love.
快乐是一种来自做你喜欢的事情的感觉。