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Octagon 八边形 What is a shape that has 5 lines and 5 angles? 哪种形状有五条边和五个角？ It is a pentagon. 它就是五边形。 What is a shape that has 8 lines and angles? 哪种形状有八条边和八个角呢？ It is an octagon.
与美国小学生一起学英文第7册
Think arranged marriages are loveless? Not so, says psychologist Robert Epstein, a contributing editor for Scientific American MIND magazine. He spoke March 10 at the 92nd Street Ys Tribeca site in New York City: And theres even a study published in
Scientific American(三)月
Small-Scale Irrigation Nets Large-Scale Payoff A new study shows small-scale irrigation systems could boost farmers incomes by billions of dollars in sub-Saharan Africa and South Asia. The research was discussed at the World Water Week conference in
VOA标准英语2012年(八月)
By Ernest Leong Washington 30 October 2007 Washington, DC -- best known as the U.S. capital and a playground for politicians and diplomats -- might also be home of ghosts. Those who claim to have seen or felt their presence say the spirits date back
2007年VOA常速英语（十月）
今天我们要学的词是 large-scale。Large-scale 大规模的。The police busted a large-scale drug-trafficking ring. 警察捕获了一个大型毒品走私集团。Russia said that it is not planning a large-scale evacuation of its citizens l
英语单词荟萃
JERUSALEM, May 8 (Xinhua) -- Israeli researcher Jacob (Koby) Scheuer, from the Tel Aviv University (TAU) School of Electrical Engineering, has developed a nano-scale gyroscope, the Ha'aretz daily reported Sunday. Scheuer developed a new optic-fiber n
英语新闻