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咽鼓管圆枕在咽鼓管咽口前、上、后方弧形的隆起 yān gǔ guǎn yuán zhěn (zài yān gǔ guǎn yān kǒu qián shàng hòu fāng hú xíng de lóng qǐ)stresses
med. трубно-глоточный валик