扁斑奎蛇在中美洲和南美洲土生土长，并有着各种颜色，其中包括惹眼的黄色。
Eyelash vipers are indigenous to Central and South America and come in a variety of colors, including shocking yellow.
黄色或棕色斑，白斑，不对称口香糖轮廓和不平衡力可以变丑，你的笑容。
Yellow or brown stains, white spots, asymmetrical gum contours and uneven edges can disfigure your smile.
牙齿易成为龋齿（蛀牙），由齿面的淡黄色薄膜（齿斑）上的细菌制造出的酸而造成。
The teeth are subject to caries (decay), caused by acid from bacteria In plaque, a yellowish film that builds up on teeth.
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