英语语法分析

Natural nidus of Trichobilharzia exists in Huainan area.

淮南地区存在毛毕属吸虫自然疫源地。

Bacteria or bile pigment may serve as a nidus for crystal formation.

细菌或胆色素可作为结晶形成的一个核心。

This is the central nidus of an osteoid osteoma composed of irregular reactive new bone.

图示由不规则反应性新生骨组成的骨样骨瘤。