eardrums的音标：...

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。My eardrums are almost pierced.我的鼓膜差点震破了.The passengers swallow to relieve the pressure on their eardrums.乘客们张嘴做吞咽动作,以减轻耳鼓所承受的压力....

n.鼓膜，耳膜( eardrum的名词复数 )...