柯林斯词典eardrum /ˈɪəˌdrʌm/ (also ear drum) (eardrums) 1. N-COUNT Your eardrums are the thin pieces of tightly stretched skin inside each ear that vibrate when sound waves reach them. 耳鼓 The blast burst Ollie Williams' eardrum. 爆炸聲震破了奧利·威廉斯的耳鼓。 返回 eardrum剑桥词典a thin piece of skin inside the ear that moves backwards and forwards very quickly when sound waves reach it, allowing you to hear sounds 耳膜，鼓膜 返回 eardrum