Forthofer studies fire tornadoes with the aim of protecting firefighters.
福托菲尔研究火龙卷风的目的是为了保护消防员。
Fire tornadoes can last for an hour or more, and they can't be extinguished directly, Forthofer said.
火龙卷可以持续一个小时或以上，而且它们不能被直接扑灭，福托菲尔说。
These eddies can tighten into a tornado-like structure that sucks in burning debris and combustible gases, RMRC's Forthofer explained.
这些漩涡能收紧成为像龙卷风那样的结构吸入正在燃烧的残骸和可燃烧气体，福托菲尔解释道。
The temperature inside the core of a fire tornado can reach up to 2,000 degrees Fahrenheit (1,093 degrees Celsius)—hot enough to potentially reignite ashes sucked up from the ground, Forthofer said.
火龙卷的内部核心温度可达2，000华氏度（1，093摄氏度），其高温足以将潜在的灰烬从地面吸入重新点燃，福托菲尔说。
The temperature inside the core of a fire tornado can reach up to 2,000 degrees Fahrenheit (1,093 degrees Celsius)—hot enough to potentially reignite ashes sucked up from the ground, Forthofer said.
火龙卷的内部核心温度可达2，000华氏度（1，093摄氏度），其高温足以将潜在的灰烬从地面吸入重新点燃，福托菲尔说。
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