Their biggest concerns were discoloured teeth, followed by bad breath, wrinkles, fine lines and yellowing nails, according to the poll by an electronic cigarette firm.

调查显示，吸烟者最担心的是牙齿变色，其次是口臭、皱纹、细纹和发黄的指甲。

For example, yellow nails could be due to fungal infection or in rare cases, diseases like diabetes or psoriasis.

例如，黄色指甲可能是由于真菌感染或在极少数情况下是由于糖尿病或牛皮癣等疾病引起的。

" Grab hold and make it tight. I'll do Potter! " said Greyback, seizing a fistful of Harry's hair; Harry could feel his long yellow nails scratching his scalp. " On three! "

抓牢绑紧。我来对付波特! " 格雷伯克说，他抓住哈利的一把头发；哈利可以感觉他黄色的长指甲正刮擦着他的头皮。" 数到3!