名词
中文翻译：快乐
同义词：
['happy', 'cheerful', 'joyful']
例句：
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1. He always finds joy in the simple things in life.
他总是在生活中的简单事物中找到快乐。
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2. The children were so happy to see their parents at the party.
孩子们看到他们的父母在聚会上时非常高兴。
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3. Joy is a powerful emotion that can bring people together.
快乐是一种强大的情感，可以让人们团结在一起。