This gives them their color. However,when light travels from air to snow, some light is sent back,or reflected.

VOA: special.2010.01.05

And what is going to allow for absorption or some interaction with visible light?

哪些因素会影响吸收,或者与可见光的关系呢？

麻省理工公开课 - 固态化学导论课程节选

And it turns out that the patients actually did regain some of their sensitivity to light."

VOA: standard.2009.12.24

And tonight, once again, we gather here not simply to light some decorations, but to honor a story that lights the world.

WHITEHOUSE: National Christmas Tree Lighting Ceremony

Recent years, however, have brought to light some interesting and startling links, and researchers are beginning to understand more about how the disease spreads through the brain, and indeed how it may begin.

FORBES: Could Stress Lead to Dementia? (Yes, But Read This Before You Panic)

No wonder that Christine Lagarde was trying to introduce some light, to go with the gloom, in her remarks at the BBC World Debate, in the main atrium of the International Monetary Fund on Thursday.

BBC: The global economy and the Hollow Men