自燃 zìrán spontaneous combustion Origin Definitions Defs Strokes Stroke Words Sentences Sents 1 sentence 这种材料在高温下容易发生自燃。 zhè zhǒng cáiliào zài gāowēn xià róngyì fāshēng zìrán. This material is prone to spontaneous combustion at high temperatures. Source: Dong Chinese Dictionary