单词：phenylsepharose
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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
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
A whole new year 全新的一年 But everything's same 一切却依然是老样子 Waste the day 日子就这样浪费 With a list of ways I should change 一张清单上，说好的改变依然没有变 We drive all around this town 开着车在这个
听歌学英语
By Robert Berger Jerusalem 17 November 2007 The United Nations has criticized Israel's controversial separation barrier in the West Bank. As Robert Berger reports from VOA's Jerusalem bureau, Israel has rejected the report, saying the fence is vital
VOA常速英语2007年（十一月）
At twenty years of age I'm still looking for a dream A war is already waged for my destiny But You've already won the battle And You've got great plans for me Though I can't always see, 'cause... I got a couple dents in my fender Got a couple rips in
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