ear·drum /-ˌdrʌm/ 中耳,鼓膜
ear·drum /-ˌdrəm/ 名詞 鼓室,鼓膜,中耳
Ear·drum n. Anat. The tympanum. See Illust. of Ear. ◄ ►
eardrum n : the membrane in the ear that vibrates to sound [syn: tympanum, tympanic membrane, myringa]