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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. The Earths crust is old. Billions of years old. So old that its nearly impossible to imagine. And now scientists have discovered what may be the oldest

发表于:2018-12-24 / 阅读(167) / 评论(0) 分类 Scientific American(九)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Theres definitely methane on Marsand there are seasonal variations of how much is being released into the thin Martian atmosphere. Which means that Mar

发表于:2019-01-08 / 阅读(156) / 评论(0) 分类 Scientific American(一)月

What does an 800-pound gorilla eat? If you said: anything it wants, youre not thinking like a scientist. A scientist would say, Let me analyze the isotopic composition of its excreta and Ill get back to you. Because a new study shows that the ratio o

发表于:2019-01-08 / 阅读(148) / 评论(0) 分类 Scientific American(十二)月

Scientists Closer to Solving Plain of Jars Mystery A new group of human remains has been uncovered on the Plain of Jars in Laos. They are believed to date back to the Iron Age, some 2,500 years ago. The Plain of Jars is in the central Lao province of

发表于:2019-01-12 / 阅读(139) / 评论(0) 分类 2016年VOA慢速英语(三)月

C- Christopher Tietjens Mac- MacMaster Mac: A weekend on the golf links might do me some good, hobnobbing with our masters. I will change into my golfing togs when we get to our digs. One never knows who might be on the train. Mr Sandbach MP, going d

发表于:2019-01-21 / 阅读(161) / 评论(0) 分类 跟着英剧练发音

Compston's machine allowed such rocks to be dated with unparalleled precision. 康普斯森的仪器能以无与伦比的精确度测定这些岩石的年代。 The prototype SHRIMP was built and machined in the Earth Science department's own worksho

发表于:2019-02-17 / 阅读(148) / 评论(0) 分类 万物简史
学英语单词
able-bodied
actual-throat
affixer
akumal
Ancash
annual capital charge
antiferroelectricity
ATR (advanced thermal reactor)
Ayadaw
bifactors
biggering
BPCS
Brucella para-abortus
calx chlorata
capitalist nationalization
carrier buffer
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chanotarelle
check bouncer
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damascus (dimashq)
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Fiadanana
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loosely coupled multi-processor system
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mirror reversed negative
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persuase
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