The prevalence of this fatal contagious fever stills remains unabated . A puissant chemical has been devised to cure the disease.

• 除蟑螂通常被认为是件麻烦事。经常被贬低的言语辱骂,这种普遍存在的，带着它独特芬芳气味儿的昆虫对什么都感兴趣。