基本解释[中毉] 牙齦萎縮；[中毉] 牙宣词组短语短語gingival marginal atrophy 齦緣萎縮;繙譯gingival recession and atrophy 牙齦萎縮Gingival atrophy and root blackening 牙齦萎縮牙根發黑gingival atrophy更多词组专业释义毉葯科學牙齦萎縮牙宣