[N-UNCOUNT 不可数名词]肺炎Pneumonia is a serious disease which affects your lungs and makes it difficult for you to breathe.
[also a N]
She nearly died of pneumonia.
她差点儿死于肺炎。
Oxford
pneu·mo·nia/njuːˈməʊniə; NAmEnuːˈmoʊniə/noun[uncountable ]a serious illness affecting one or both lungs that makes breathing difficult 肺炎pneumoniapneumoniaspneu·mo·nia/njuːˈməʊniə; NAmEnuːˈmoʊniə/