Heat, oxygen and fuel form the fire triangle .
热量、氧气和燃料是火的三要素。
Firefighters often talk about the fire triangle when they are trying to put out a blaze.
消防员在灭火时常常提到这三要素。
What are the three components of the Fire Triangle?
消防三角形的三个组成部分是甚么？
What are the three components of the Fire Triangle?
消防三角形的三个组成部分是甚么？
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