The nicotine in cigarette smoke can not only make your teeth (and the walls of your home) brown, but it's also notorious for staining fingers and nails as well.
香烟中的尼古丁不仅会使你的牙齿以及你家的墙变黄,而且还会使你的手指和指甲变色。
The nicotine in cigarette smoke can not only make your teeth (and the walls of your home) brown, but it's also notorious for staining fingers and nails as well.
香烟中的尼古丁不仅会使你的牙齿以及你家的墙变黄,而且还会使你的手指和指甲变色。
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