He helped popularize the idea that some diseases not previously thought to have a bacterial cause were actually infections, which aroused much controversy when it was first suggested.

他帮助普及了某些先前不认为是由细菌引起的疾病实际上正是由细菌感染引起的观点，该观点在提出之初引起了很多争论。

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He helped popularize the idea that some diseases not previously thought to have a bacterial cause were actually infections, which aroused much controversy when it was first suggested.

他帮助普及一些疾病并非以前所认为的是由于某种细菌引起的，而是因为感染。当这个观点首次提出来时，引起了很大的争论。

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