deciduous toothdɪˈsɪdʒu:əstu:θ 基本英英近义反义Thesaurus n.乳齿;乳牙 Noun: one of the first temporary teeth of a young mammal one of 20 in children近义词milk tooth乳齿baby tooth乳齿primary tooth乳齿 as in.milk tooth 同义词primary tooth milk toothnoun baby tooth primary tooth