| 例句 |
A cold is an infection of the upper respiratory tract.感冒是上呼吸道的感染。A rust or prune juice in nasal discharge colour indicates blood originating from lower respiratory tract.铁锈色或深紫红色鼻液表示血液来自下呼吸道。Disorders of ciliary function can lead to frequent respiratory tract infections.纤毛功能失调会导致经常出现呼吸道感染。He had an infection in the upper respiratory tract.他上呼吸道感染。 |