She said the dry ground, warm weather, an ignition source, and the strong wind created " a disaster."

她说，干燥的地面、温暖的天气、引火源和强风造成了“一场灾难”。

So there are more ignition sources.

所以火源比较多。

GUILLERMO REIN, PROFESSOR OF FIRE SCIENCES, IMPERIAL COLLEGE LONDON: In order to have a wildfire, you need the three sides of a triangle, the oxygen, the fuel, and the ignition source.

伦敦帝国理工学院火灾科学教授吉列尔莫·雷因：发生野火，像三角形的三个边一样要有三个条件：氧气，燃料和点火源。