有的变化可能与原发性疾病或感染有关。

They can sometimes be related to primary disease or infection.

youdao

目的为确诊某厂一起不明原因的暴发性疾病及研究其发生原因。

Objective To explore the cause on outbreak of an unknown disease in a factory.

youdao

目的为确诊某厂一起不明原因的暴发性疾病及研究其发生原因。

Objective To explore the cause on outbreak of an unknown disease in a factory.

youdao