perennial hay-fever
常见例句
- People who suffer from year-round hay fever (perennial rhinitis) may be allergic to persistent allergens in the environment coming from such sources as dust mites, mice, and cockroaches.
那些常年经历着过敏的人其过敏源可能是来自环境中的粉尘，老鼠，和蟑螂。 返回 perennial hay-fever