常見例句Now he is in the hospital because he has contracted a relapsing fever.他不幸患上回歸熱，現(xiàn)在在住院呢。Relapsing fever is an acute febrile illness caused by spirochetes of the genus Borrelia.回歸熱是一種螺旋體屬引起的急性發(fā)熱性疾病。 返回 recurrent fever