The sounds then travel down to the middle ear, the inner ear, and then to your brain.

声音向下传到中耳、内耳，然后传到你的大脑。

youdao

Conductive hearing impairment is a problem in the outer or middle ear.

传导性听力障碍是外耳道或中耳道出现问题。

youdao

You have a middle ear infection when germs get into the middle ear and the area fills up with fluid (or pus), which contains germ-fighting cells.

当微生物进入中耳引起感染，小气袋里就会因此充满脓液，这些脓液里包含了抗菌细胞。

youdao

Conductive hearing loss can often be caused by malformations of the external or middle ear or by severe middle ear infections.

BBC: bonebridge

Sound travels through the ear drum, the middle ear, and is then processed by the inner ear.

FORBES: Deaf People Will Hear

Police later recovered part of Mr Taylor's ear from the middle of the station's concourse.

BBC: Scott Lawson jailed over 'severed ear brawl' in Glasgow