1. He was diagnosed as a pyromaniac due to his uncontrollable urge to start fires.
由于他无法控制的纵火欲望，他被确诊为火烧狂。
2. The pyromaniac was arrested after a series of arson attacks in the neighborhood.
在附近发生一连串纵火案件后，这名火烧狂被逮捕了。