spontaneous
英 [spɒnˈteɪniəs]
[ADJ]
1. 自然的 , 自发的（行为）
Spontaneous acts are not planned or arranged, but are done because someone suddenly wants to do them.
双语例句
例：Diana's house was crowded with happy people whose spontaneous outbursts of song were accompanied by lively music.
戴安娜的家里挤满了幸福的人们，他们伴着欢快的音乐不由自主地唱起歌来。
2. 自然的（事件）
A spontaneous event happens because of processes within something rather than being caused by things outside it.
双语例句
例：I had another spontaneous miscarriage at around the 16th to 18th week.
我在大约第16至18孕周时又经历了一次自然流产。
ADJ. 形容词
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