microorganism germ plasma

例句：

1. 1. Microorganisms play a crucial role in the ecosystem.
   微生物在生态系统中起着至关重要的作用。
2. 2. The study of microorganisms has led to many breakthroughs in medicine.
   对微生物的研究已经导致了医学上的许多突破。
3. 3. Microorganisms are responsible for the degradation of organic matter in soil.
   微生物负责土壤中有机物质的降解。