Greenhouse effect

英文Greenhouse effect

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英文释义

The idea that certain gases in the atmosphere trap heat like the glass in a greenhouse was first proposed over one hundred years ago, and is now widely accepted. About half the sun’s energy reaching the earth is reflected back into space or absorbed by the upper atmosphere. The other half is absorbed by the earth’s surface. Some of this energy is then radiated upwards where a portion is trapped in the atmosphere warming the Earth. The rest goes out into space. The greenhouse gases, primarily carbon dioxide and methane, control the balance between the trapped and radiated energy

中文释义

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