head-germ

例句：

1. 1. The bacteria thatcause food poisoning are known as "food-borne" or "food-poisoning" bacteria.
   引起食物中毒的细菌被称为“食源性”或“食源性疾病”细菌。
2. 2. Head-germs are the first to be exposed toharmful chemicals in the environment.
   头状芽孢是环境中最早接触到有害化学物质的。
3. 3. Insome cases, head-germs cansurvive for years without being destroyed by heator sunlight.
   在某些情况下，头状芽孢可以在高温或阳光下存活数年而不会销毁。