bacteria, germs
不要你这个刀上面有细菌
Don't use that knife of yours—it has bacteria on it.
— 美人鱼 (2016)
细菌…细菌…
Bacteria… bacteria…
— 赫鲁斯塔廖夫，开车！ (1999)
手机如同马桶一样被细菌污染。
Cell phones are contaminated with bacteria, just like toilet seats.
你们要搞清楚即使只是细菌，也会很麻烦
You need to understand that even if it’s just bacteria, it can still cause a lot of trouble.
— 星际旅行2：可汗怒吼 (1982)