germ-free

无菌的

例句与用法：

Germs may invade the organism.

细菌会侵入有机体。

Germs are invisible to the naked eye.

细菌用肉眼看不见。

The prize is a tangible testimony that she has gotten a germ of write ability.

这个奖是一个具体的证明，说明她具有创作才能。

Disinfectant kills germs.

消毒剂灭杀细菌。