Hearing and condition of eardrums 听力及耳鼓膜状况
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.
爆炸声震破了奥利·威廉斯的耳鼓。
I refused to wear headphones because they can perforate your eardrums.
我不愿戴耳机，因为它可能会使鼓膜穿孔。
So musical instruments evolved in ways that optimize their acoustical properties, how the instrument vibrates and sends those vibration through the air to our eardrums.
因此，乐器的进化优化了它们的声学特性，且优化了乐器振动的方式，并将这些振动通过空气传到我们的耳膜。
You had better open your mouth to relieve the pressure on your eardrums.
你最好张开嘴以减轻耳朵鼓膜所受的压力。
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