But because they're not plant pathogens, they don't typically cause spots.

但是因为它们不是植物病原菌， 所以不会导致斑点。

It is believed that the molecule emerged as a defense mechanism against invasive bacteria, plant pathogens and...

人们认为，这种分子的出现是一种防御入侵细菌、植物病原体和真菌的防御机制。

It is believed that the molecule emerged as a defence mechanism against invasive bacteria, plant pathogens and — We humans and an Asian tree shrew are the only mammals in the world known to tolerate or even seek out capsaicin.

据称，辣椒分子能够防御入侵的细菌、植物病原体和-人类和一种亚洲树鼠是世界上已知的能耐受甚至寻找辣椒素的哺乳动物。