单词：unleisured
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Heat-resistant Glassware Celebrates 100th Anniversary 耐热玻璃器皿诞生100周年 One hundred years ago, a new brand of kitchenware named Pyrex entered the American market, firmly imprinting its name into the psyche of consumers. It is still be
VOA标准英语2015年(六月)
This is Scientific American's 60-Second Science. Im Cynthia Graber. This will just take a minute. Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because
Scientific American(三)月
Lowering the Ceiling on Roof Energy Losses Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because traditional black asphalt roofs heat up in summer and s
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Solar cells convert sunlight to electricity. But they don't take advantage of all that solar heat, thereby missing out on the majority of the solar ene
Scientific American(四)月
Heat-Resistant Glassware Celebrates 100th Anniversary 耐热玻璃器皿诞生100周年 One hundred years ago, a new kind of cookware entered the American market. It was called Pyrex. Today the Pyrex name is well known in the United States. The heat-
2015年VOA慢速英语(六)月
59 美国科学家正试图培育抗叶锈病小麦 DATE=6-19-01 TITLE=AGRICULTURE REPORT - Developing Wheat Resistant to Leaf Rust BYLINE=George Grow (Start at 59
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