1.[C,sing.]微生物，细菌
2.[sing.]起源，发端，萌芽
3. 可数名词：胚芽，芽胞 英语解释
- a small apparently simple structure (as a fertilized egg) from which new tissue can develop into a complete organism
- a minute life form (especially a disease-causing bacterium); the term is not in technical use
- anything that provides inspiration for later work