单词：eugenol phenylacetate
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This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro
Scientific American(三)月
β-Amyrin β-香树脂醇 α-Amyrin acetate α-香树脂醇乙酸乙酯 β-Amyrin acetate β-香树脂醇乙酸乙酯 β-Amyrin palmitate 棕榈酰β-香树酯 Anabasine 毒藜碱 Anagyrine 臭豆碱,安
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This is Scientific American's 60-Second Science. I am Steve Mirsky.Got a minute? Talk about your vicious cycles. A new study finds that belly fat could be making you hungrier. Which would lead to more belly fat. The research was performed at the Univ
Scientific American(四)月
Algae seem harmless enough. These precursors to plants thrive throughout the world's waters. But these single-celled plants have global consequences. We can thank them for oxygen in the atmosphere, oil in the lithosphere as well as dead zones in the
Scientific American(十一)月
LULU GARCIA-NAVARRO, HOST: Jeffrey Eugenides is well-known for his novels. He won the Pulitzer for Middlesex. But his latest work, a collection of short stories, is a departure. JEFFREY EUGENIDES: Short stories are difficult, maddening, little puzzle
2017年NPR美国国家公共电台10月
By Roger Wilkison The European Commission has given Turkey the go-ahead to begin talks to join the European Union, but set a series of tough conditions and warned that there is no guarantee the negoti
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