In a cool climate, its appears pure blue, but darkens to a purple when the temperature rises.

在凉爽的气候下，它呈纯蓝色，但随着温度的升高，它会变暗，逐渐呈现出紫色。

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Do you enjoy breathing pure, cool air?

你喜欢呼吸纯净、凉爽的空气吗？

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Send me the love which is cool and pure like your rain that blesses the thirsty earth and fills the homely earthen jars.

赐予我这样的爱吧，清凉纯净，像你赐福于干渴的大地、注满家中陶罐的雨。

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The Department for Environment, Food and Rural Affairs (Defra) has named just four offset providers that meet its new guidelines - Pure, Global Cool, Equiclimate and Carbon Offsets.

BBC: NEWS | Business | UK to tackle bogus carbon schemes

When I think of occupations that require intuition, intelligence, a cool mind, and sometimes pure instinct, I think of astronauts and some really talented portfolio managers.

FORBES: Why Money Managers Should Be Like Astronauts

Because the two materials exhibit a high thermal conductivity, they allow the device to cool more efficiently while distributing said heat -- 25 percent quicker than the pure copper in many pieces of tech.

ENGADGET: NC State researcher finds more efficient way to cool devices, looks to cut costs too