spontaneous

形容词 spontaneous:

1. happening or arising without apparent external cause
   同义词：self-generated
2. said or done without having been planned or written in advance
   同义词：ad-lib, unwritten

1. The spontaneous combustion of the oil-soaked rags caused the barn to catch fire.
   油布碎片的自燃使谷仓起火。
2. My husband was handsome, spontaneous and charming in his youth.
   我丈夫年轻时英俊、诚挚、富有魅力。
3. Spontaneous fellowship and sympathy among a number of people.
   本能的友情一群人自然产生的友谊和同情
4. An improvised, often spontaneous spectacle or performance, especially one involving audience participation.
   事件剧一种即兴的、通常是自发的、尤指由观众参与的场景或演出
5. He is spontaneous to offer help.
   他主动提供帮助。
6. She shows a spontaneous gaiety of manner.
   她露出天真愉快的神态。