例句
Scientists are constantly researching new ways to combat dangerous pathogens that cause infectious diseases.
科学家们不断研究新的方法来对抗引起传染病的危险病原体。
Scientists talk about the 'virulence' of a pathogen, but what does that mean to laypeople?
科学家谈论一种病原体的“毒力”，但是这对于普通人的意义是什么？