转主寄生现象

例句：

1. 1. The phenomenon of transmutation is a fascinating study of how matter can change form.
   转形现象是研究物质如何改变形态的迷人课题。
2. 2.Parasitic infections are a major cause of disease in many parts of the world.
   许多地区的疾病主要源于寄生虫感染。
3. 3. In the process of transmutation, the atoms rearrange themselves to form new substances.
   在转化过程中，原子重新排列以形成新物质。