"It's a kind of very light carbon nanotube material, " said Lei Zhai, the associate professor of chemistry at the University of Central Florida who led the material's development.

带领材料开发团队的中佛罗里达大学的化学副教授翟磊（音）说：“这是一种非常轻的碳纳米管材料。”

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The giant is very light carbon frame!

捷安特的碳纤维车架非常轻！

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The gases are characterized by rich light carbon isotope in methane and rich heavy carbon isotope in heavy hydrocarbons (C_2, -C_4).

该区的煤成气以甲烷碳同位素偏轻、重烃气体碳同位素偏重为特征；

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Plants naturally take in carbon dioxide they need for photosynthesis, the process of changing light energy to chemical energy.

VOA: special.2010.01.26

Corals 'bleach' when they are under stress, which typically has been caused by an increase in sea-surface temperatures (but which could be also brought on by variations in light, carbon dioxide (CO2) levels or pollutants).

CNN: All About: Coral Reefs

For the most part, travellers were enthusiastic about riding the light-weight, carbon-composite 787, and sampling some of the added comforts it promises.

FORBES: Boeing's Dreamliner and Airbus' Response

Even with its thin and light design, the X1 Carbon Touch packs a punch.

ENGADGET: Lenovo announces the ThinkPad X1 Carbon Touch, available now for $1,399 and up