Irregularly shaped brown or blue spots in the nail bed can be melanomas.

甲床上不规则的棕色或蓝色点可能是黑索瘤。

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Blue lipstick and green nail polish are popular right now, do you like them?

目前，蓝色口红和绿色指甲油很受欢迎。你喜欢吗？

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The nail is a blue or pale in color, this may be a sign of anemia in the diet, you need some iron.

指甲发青或者是一种苍白的颜色，这可能是你贫血了的信号，在饮食中你需要一些铁元素。

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Sian was told to sit in the anchor's seat and did so, wearing a borrowed (man's) jacket, no make-up and blue nail-varnish!

BBC: News - Breakfast - Sian Williams

"This is the classiest party I've ever been to, " remarked Ms. Neal, who was wearing her own shade of celebratory blue nail polish.

WSJ: Upper East Side 'Pool Party' Goes for Gold

Though most of the ten other candidates (Net entrepreneurs and industry players all) were in the room, no desperate attempt can be reported of any of them trying to seize Tracy's tiara, or even the bottle of metallic-blue nail-polish.

CNN: She's on Top