腺样体又称________,位于鼻咽后壁中线处,是咽淋巴环的组成部分。正常生理情况下,出生后即存在,________岁时发育最大,一般________岁后逐渐退化萎缩。
— What would you like to have, meat or fish?
— _____________________.
— ___________________
— Once or twice a week.
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