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。

youdao

Do you enjoy breathing pure, cool air?

你喜欢呼吸纯净、凉爽的空气吗？

youdao

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

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