natural focus

 
  • 自然疫源地(動(dòng))

natural focus的用法和樣例:

例句

  1. Conclutions The virulence of Y.pestis from plague nature foci is moderate.
    結論河北省鼠疫自然疫源地病原菌毒力屬于中等毒力。
  2. As one of the oldest identifiable diseases known to man, plague remains endemic in many natural loci around the world.
    鼠疫作為人所共知的一種最古老可確定的疾病,在世界上許多自然疫源地仍呈地方性流行。
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