spontaneous

adj.

自发的；自然的；天然产生的；无意识的

spontaneous combustion自燃

spontaneous emission[电磁学]自发发射

spontaneous abortion自然流产；自发性流产

amplified spontaneous emission放大自发射；放大式自发射

spontaneous ignition自燃

spontaneous polarization自发极化；自然极化

spontaneous recovery自然回复（恢复）；自然痊愈

spontaneous radiation自发辐射

spontaneous magnetization自发磁化；自发磁化强度

1. He is spontaneous to offer help.
   他主动提供帮助。
2. It is a spontaneous cheer from the crowd.
   那是群众自发的喝彩。
3. The spontaneous applause cut the singer short.
   自发的掌声打断了歌唱家的演唱。
4. The eruption of volcanoes is spontaneous.
   火山爆发是自然产生的。
5. 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。

Spontaneous DNA repair increases during hemodialysis.
Inhibited Spontaneous Emission in Solid-State Physics and Electronics
Inhibited spontaneous emission in solid-state physics and electronics.
Spontaneous fluctuations in brain activity observed with functional magnetic resonance imaging.
Spontaneous initiation of atrial fibrillation by ectopic beats originating in the pulmonary veins.
Guidelines for the Management of Spontaneous Intracerebral Hemorrhage
ChemInform Abstract: Formation of Monolayer Films by the Spontaneous Assembly of Organic Thiols from Solution Onto Gold
Guidelines for the Management of Spontaneous Intracerebral Hemorrhage A Statement for Healthcare Professionals From a Special Writin...
Guidelines for the management of spontaneous intracerebral hemorrhage: a guideline for healthcare professionals from the American He...
Guidelines for the management of spontaneous intracerebral hemorrhage in adults: 2007 update: a guideline from the American Heart As...