Only very old ice from a very deep glacier (the result of hundreds of thousands of years of compression) reflects light as blue.

只有来自极深冰川的古老冰块才能反射出蓝色，这是由于成千年的压力所致。

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And in general, our eyes work very similarly, since we all live in an environment where the color of the light is generally the same shade of blue.

一般来说，我们的眼睛处理信息都非常相似，因为我们都生活在一个环境中，光的颜色是同样色度的蓝色。

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Light blue and green grass in the lake is not lit, shading effect is very good, and colour is magnificent, more popular among consumers.

浅蓝色和绿色的草在湖中是不通明的板，遮光作用非常好，而色彩是瑰丽的，更受消费者的喜爱。

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"I was standing outside having a bit of fresh air and as I turned round I saw this very bright blue light which was dimming, " he said.

BBC: Meteor spotted in night sky in England and Wales

The problem with the latter is that it tends to generate a very cool light with a blue tinge, while the former is less energy efficient because of their reliance on green LEDs.

ENGADGET

His clothes were as ugly and incongruous as his two-tone swimsuit a baggy shirt, which looked black from my balcony but was probably patterned, and a pair of light-colored slacks that appeared to be a very pale blue, though that was possibly a reflection from the nearly invisible water.

NEWYORKER: While the Women Are Sleeping