日珥分光镜

Supermassive Black Holes 超大质量黑洞 - 5

By measuring how fast these stars were moving, he could prove if there really was a black hole at the center of an active galaxy. I picked a galaxy nearby which is called NGC 1068, an active galaxy, w

发表于:2018-12-07 / 阅读(330) / 评论(0)

超大质量黑洞

中国的情人节

The seventh day of the seventh month of the lunar calendar is known as Qi Xi Jie or 七夕节, a traditional holiday that has been recently called China's Valentine's Day. The 2,000-plus-year-old holiday marks the star-crossed love between a cow herd

发表于:2018-12-12 / 阅读(48) / 评论(0)

英美文化

NPR 2011-06-03

From NPR News in Washington, I'm Lakshmi Singh. Mitt Romney makes it official. Today, He declared his candidacy for the 2012 Republican nomination for president. NPR's national political correspondent Don Gonyea has more. Romney traveled to a farm in

发表于:2018-12-17 / 阅读(64) / 评论(0)

2011年NPR美国国家公共电台6月

经济学人:公司理论:科斯集结令(2)

A well-defined task can easily be put out to the market, where a contractor is paid a fixed sum for doing it. 定义明确的任务可以被轻轻松松地交于市场。在那里，签约人被付给一笔固定的钱来完成这项任务。 The fir

发表于:2018-12-31 / 阅读(36) / 评论(0)

经济学人财经系列

Forces Will Not Back Down During Afghan Transition

NATO's secretary-general says foreign forces in Afghanistan will remain on combat duty during the scheduled transition to Afghan security control in 2014. That statement by Anders Fogh Rasmussen came after U.S. Defense Secretary Leon Panetta said Ame

发表于:2019-02-08 / 阅读(54) / 评论(0)

英语新闻

托福写作“一对多”

1、请看托福写作第89题：If you could travel back in time to meet a famous person from history, what person would you like to meet? Use specific reasons and examples to support your choice. 如果让你见一位历史名人，你会选择谁?

发表于:2019-02-18 / 阅读(39) / 评论(0)

托福英语

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学英语单词

abscissins

absolute luminance threshold

acceleration index

actionlets

Alimos

anaphylactic gangrene

bar copper wire

be lost to all feeling

bhnrc

broc

cape cod canals