Over time, if your blood doesn't circulate enough oxygen throughout your body, your lips and fingernails can take on a blue or gray tone.

随着时间过去，如果你的血液没能将足够的氧气循环到全身，你的唇和手指甲会呈现蓝色或灰色调。

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A novel method to fabricate microlens array was proposed. The microlens array was made of bichromate gelatine, exposed by coding gray tone mask and developed by protein enzyme solution.

提出一种以重铬酸铵明胶作为记录材料，用编码灰阶掩模曝光，蛋白酶溶液作为显影剂制作折射型微透镜阵列的新方法。

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Based on the theory of the information measure for fuzzy sets, the information measure for gray-tone images is discussed.

基于模糊集信息测量的理论，本文讨论了黑白图象的信息量度问题。

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Everything has a pale brown-gray tone.

CNN: 'Cultural jackpot' hardest hit

Hope plays with a welcome mixture of dignity and songful sweetness, while Meneses is an elegant and soulful cellist with a tone of slate-gray velvet.

NPR: Beaux Arts Trio Bids Farewell At Tanglewood

The news of those new job cuts and closures set the tone for the Challenger Gray Job Cuts Report for October, which showed a 41% increase in announced job cuts compared to September.

FORBES: October Employment Report Puts Restaurant Stocks on Notice