常见例句雙語例句Discoloration of the tongue, commonly white, is due to deposits of epithelial debris, effete (or worn-out) bacteria, and food.舌頭的變色物質通常是白色的，由上皮細胞的沉澱物，死亡的細菌和食物組成。sininicai.blog.163.com 返回 food discoloration