形容词
中文翻译：自发的
同义词：
['uninhibited', 'unrestrained', 'natural']
例句：
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1.The spontaneous decision to help the homeless was a great act of kindness.
自发决定帮助无家可归者是一个伟大的善举。
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2. The spontaneous burst of joy from her smile was infectious.
她微笑中自发爆发的快乐感染了周围的人。
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3. The spontaneous agreement between the two parties was based on mutual respect.
双方基于相互尊重而自发达成一致。