细菌镜检查法

例句：

1. 1. The study of bacteria is essential for understanding the human body's immune system.
   研究细菌对于理解人体的免疫系统至关重要。
2. 2.The bacteriological examination of the water samples revealed a high level of contamination.
   对水样进行的细菌学检验显示了高污染水平。
3. 3.In microbiology, bacteria are studied to understand their interactions with other organisms.
   在微生物学中，研究细菌是为了理解它们与其他生物体之间的相互作用。