chéng / fēi jī / shí / ěr yàn guǎn / rú guǒ / bù néng / jí shí / píng héng / yā lì / ěr duo / jiù / huì / chū xiàn / dǔ sè gǎn

乘飞机时，耳咽管如果不能及时平衡压力，耳朵就会出现堵塞感。

When flying, if the Eustachian tube cannot equalize pressure in time, the ears may feel blocked.