food discoloration
常見(jiàn)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(zhì)通常是白色的，由上皮細(xì)胞的沉淀物，死亡的細(xì)菌和食物組成。
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