laboratory-prepared inoculum

例句：

1. 1. The laboratory-prepared inoculum was crucial for the successful growth ofthe bacteria.
   实验室制备的菌种对于细菌的成功生长至关重要。
2. 2. The research team used laboratory-prepared inoculum to studythe effects of different environmental factors on plantgrowth.
   研究团队使用实验室制备的菌种来研究不同环境因素对植物生长的影响。
3. 3. The inoculum was prepared bymixing a small amount of soil with asolution containing nutrients and microorganisms.
   菌种是通过将少量土壤与含有养分和微生物的溶液混合制备而成的。