来自拉丁词bacilum, 杆。词源同bacillus, 杆菌。

1. Warm milk is the ideal breeding ground for bacteria.

温牛奶是细菌理想的滋生地。

2. Potentially dangerous bacteria are regularly sent from one laboratory to another.

有潜在危险的细菌经常被从一个实验室传到另一个实验室。

3. The fertiliser releases nutrients gradually as bacteria decompose it.

随着细菌的分解，肥料逐渐释放出各种营养成分。

4. Bacteria reproduce by dividing and making copies of themselves.

细菌通过分裂和自我复制来繁殖。

5. Chlorine is added to kill bacteria.

加氯是为了杀死细菌。