常见例句Now he is in the hospital because he has contracted a relapsing fever.他不幸患上廻歸熱，現在在住院呢。Relapsing fever is an acute febrile illness caused by spirochetes of the genus Borrelia.廻歸熱是一種螺鏇躰屬引起的急性發熱性疾病。 返回 recurrent fever