基本解释[中医] 牙龈萎缩；[中医] 牙宣词组短语短语gingival marginal atrophy 龈缘萎缩;翻译gingival recession and atrophy 牙龈萎缩Gingival atrophy and root blackening 牙龈萎缩牙根发黑gingival atrophy更多词组专业释义医药科学牙龈萎缩牙宣