短語(yǔ)詞組短語(yǔ)tooth h germ 牙胚tooth -germ 牙胚permanent tooth germ 恒牙胚human tooth germ 人牙胚tooth germ organ culture 牙胚培養(yǎng)human tooth germ development 人牙齒發(fā)育tooth germ basement 翻譯 返回 tooth germ