Analysis shows that the dissolved organic material absorbs enough blue wavelengths from solar light to make the ice appear green.

分析表明，溶解的有机物质吸收了足够的来自太阳光线的蓝色波长，使冰看起来是绿色的。

youdao

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。

youdao

The blue light is the product of a long travel path through the snow or ice.

VOA: special.2010.01.05

Former Pittsburgh Penguin hockey captain Mario Lemieux returned to the ice on Friday wearing a light blue knit cap with a pom pom on top.

FORBES: Mario Lemieux's Winter Classic Hat

Depending on the capricious whims of the extreme Arctic climate and calendar, thick clouds reveal remote fragments of the landscape as if concealing some great mystery, blinding sunshine illuminates the ice, or perpetual moonlight bathes it all in the strange, blue half-light of the polar night.

BBC: Drawing near to the North Pole