常见例句双语例句Discoloration of the tongue, commonly white, is due to deposits of epithelial debris, effete (or worn-out) bacteria, and food.舌头的变色物质通常是白色的，由上皮细胞的沉淀物，死亡的细菌和食物组成。sininicai.blog.163.com 返回 food discoloration