中央凹

zhōng yāng āo

释义

fovea centralis (depression in the macula retina, most sensitive optic region)

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汉字

中zhōngcentral; center, middle; amidst; to hit (target), to attain; China; Chinese口丨央yāngcentral; to beg; to run out冂大凹āoconcave, hollow; depressed; pass, valley一