感冒导致鼻咽部肿胀时，咽鼓管可能不易通气，耳朵也会感到发闷。
When a cold causes swelling in the nasopharynx, the Eustachian tube may not ventilate easily, making the ear feel stuffy.
When a cold causes swelling in the nasopharynx, the Eustachian tube may not ventilate easily, making the ear feel stuffy.