[网络] 氨基吡啶类；氯基吡啶类；胺基吡啶

SSS 2009-01-23

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As Valentines day approaches, remember, its the thought that counts. Just ask a decorated cricket. Because according to a study published in the January

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Egyptian archaeologists have discovered the bottom part of an unknown pyramid in the Sakkara area about 18 miles south of Cairo. National Geographic explorer-in-residence Dr. Zahi Hawass, the Secretary General of the Egyptian Supreme Council for Anti

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By Brian Padden Irbil, Iraq 17 August 2007 The death toll from a series of suicide attacks on Iraq's Yazidi sect on Tuesday continues to rise. Officials now estimate at least 400 people were killed and hundreds more wounded when four truck bombs expl

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2007年VOA标准英语（八月）

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4th

69kg per metre rail

absinthe oils

acoustic wave in water

agitprops

air ionizing storage

arylchlorosilane

asymmetric cryptographic algorithm

B road

beam monitor

blenina quinaria