来自拉丁语 spontaneus,自由意志的，自发的，来自短语 sua sponte,自我意志，自愿，来自 sua,

1. 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。

来自柯林斯例句

2. spontaneous outpourings of praise

一片自然迸发的赞美声

来自《权威词典》

3. a spontaneous offer of help

主动提出帮助

来自《权威词典》

4. Spontaneous applause broke out as soon as she finished speaking.

她一讲完,大家不约而同都鼓起掌来.

来自《现代汉英综合大词典》

5. The eruption of a volcano is spontaneous.

火山的爆发是自发的.

来自《简明英汉词典》

[ spontaneous 造句 ]