In infrared light, shorter wavelengths look blue, and longer wavelengths appear red.

红外光谱系中, 短波长呈蓝色, 长波长呈红色.

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Where the walls of the bubble are at their thickest, the bubble will look blue - green.

当肥皂泡泡膜达到最厚时, 泡泡会呈现蓝绿色.

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Across the broad valley of the Danube, the mountains look blue and mysterious in the distance.

这些山脉越过辽阔的多瑙河盆地远远望去显得青翠而又神秘.

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