The outer ear includes the ear lobe and externalauditorycanal, which funnels sound waves toward the eardrum (or tympanic membrane) allowing it to vibrate.
外耳包括耳垂和外耳道——用于把声波引入鼓膜，使之振动鼓膜。
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Otitis externa is dermatitis usually bacterial of the auditorycanal and sometimes the external ear.