单词：production function constraint
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Electronics come in all shapes and sizesbut theres been a limit on their flexibility. Now, researchers say theyve created electronics that can be shape
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听广告学英语:RICHON Aficio Digital Multi-function System理光数码多功能系统 原文：Mary:Everybody calls me a multi-function secretary. One of her bosses (gives her a pad of paper):Mary, pick up this. Mary:Because I have to serve several bosses. Anothe
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The Philippines appears to be seeking a return to stronger economic relations with the United States. Experts say the change may be designed to balance the Philippines increasing dependence on China. The Philippine Department of Foreign Affairs said
2017年VOA慢速英语(十)月
Shale gas extraction 页岩天然气开采 The need to be seen to be clean 天然气是清洁能源吗？ Natural-gas production is booming, but its green image is in question 天然气生产蒸蒸日上，但它的清洁能源形象却受到质疑 M
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BEIJING, Feb. 27 (Xinhua) -- Senior Chinese legislators on Monday started their second deliberation on a draft amendment to the country's Law on the Promotion of Clean Production. At the three-day bimonthly session of the Standing Committee of the Na
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Saudi Arabia is signaling that it is going to boost its supply of oil on its own after failing to convince other oil producers to jointly agree to more production. Several news agencies reported Saturday that the Saudis could increase their oil produ
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