单词：carbon materials
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WHAT CAN WE DO ABOUT GLOBAL WARMING? Dear Earth Care, I am doing a project on behalf of my school about global warming. Sometimes I feel that individuals can have little effect on such huge environmental problems. However, 1 still think people shoul
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Next Step After Carbon: Knowing Your Nitrogen Footprint This is the VOA Special English Agriculture Report. 这里是美国之音慢速英语农业报道。 A carbon footprint is the amount of carbon dioxide pollution that we produce as a result of o
2011年VOA慢速英语(四)月
公司总裁Tim召集部门经理开会，讨论节能措施。 T: I've recently noticed how much paper I use on a daily basis and I've been trying to cut down. I've found that I very rarely actually need to print emails. Also, by utilizing my fax-mo
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EXPLORATIONS - Nanotechnology: How the Science of the Very Small Is Getting Very BigBy Mario Ritter Broadcast: Wednesday, February 08, 2006 (MUSIC) VOICE ONE: I'm Steve Ember. VOICE TWO: And I'm Faith
2006年慢速英语（二）月
公司总裁Tim召集部门经理开会，讨论节能措施。 T: I've recently noticed how much paper I use on a daily basis and I've been trying to cut down. I've found that I very rarely actually need to print emails. Also, by utilizing my fax-mo
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HARBIN, Jan. 31 (Xinhua) -- Carbon monoxide has been blamed for the Tuesday deaths of 12 workers in a coal mine in northeast China's Heilongjiang Province, a local official said Thursday. Three workers entered the Yongsheng mine in Dongning County to
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