单词anug
网络: 急性坏死性溃疡性龈炎(Acute Necrotizing Ulcerative Gingivitis);南洋大学毕业生协会(Association of Nanyang University Graduates);急性坏死溃疡性牙龈炎
ANUG acute necrotizing ulcerative gingivitis
急性坏死性溃疡性龈炎