There are a few particles but before it was a huge yellow stain.
有一些粒子而是之前，它是一个巨大的黄染色。
Whoever have yellow stain from food, cigarette, tea, coffee that cannot wipe out.
牙齿上有因食物，吸烟，茶，咖啡等残渣造成的黄斑。
Whoever have yellow stain from food, cigarette, tea, coffee that cannot wipe out.
牙齿上有因食物，吸烟，茶，咖啡等残渣造成的黄斑。
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