Without the Sun we wouldnt be here. It is the source of our heat, light and energy. It is enormous, bigger than we could imagine; yet its very small compared to other suns in the universe. Its unbelievable to think how much the sun burns. Its just a

发表于:2018-12-04 / 阅读(89) / 评论(0) 分类 听一分钟英文-S

China plans to send unmanned probes to explore Mars and Jupiter by 2030, said a senior space official. 航天局一名高级官员称,中国计划在2030年前发射无人探测器探索火星和木星。 Wu Yanhua, deputy director of the China Nat

发表于:2019-01-07 / 阅读(57) / 评论(0) 分类 英语新闻

This is Scientific American 60-Second Science, Im Cynthia Graber. This will just take a minute. Heres one space mission that is definitely going to be unmannedNASA is going to the sun. The Johns Hopkins University Applied Physics Laboratory is buildi

发表于:2019-01-08 / 阅读(93) / 评论(0) 分类 Scientific American(五)月

On November 8th, Russia launched a probe toward the tiny Martian moon Phobos. The launch was picture-perfect, and the spacecraft, called PhobosGrunt, soared into the night sky over Kazakhstan. The good news stops there. For instead of boosting itself

发表于:2019-01-08 / 阅读(97) / 评论(0) 分类 Scientific American(十一)月

This is Scientific American's 60-Second Science. I'm John Matson. Got a minute? On November 8th, Russia launched a probe toward the tiny Martian moon Phobos. The launch was picture-perfect, and the spacecraft, called PhobosGrunt, soared into the nigh

发表于:2019-01-08 / 阅读(77) / 评论(0) 分类 Scientific American(十一)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Albert Einstein wins again. A new study has confirmed another prediction of his theory of general relativity. The corroboration appears online in the jou

发表于:2019-01-08 / 阅读(68) / 评论(0) 分类 Scientific American(五)月

This is Scientific Americans 60-Second Science. Im John Matson, Got a minute? Imagine a pinball machine on multi-ball modeonly the balls are the size of planets. The early solar system was such a rough-and-tumble place. That chaotic environment produ

发表于:2019-01-08 / 阅读(70) / 评论(0) 分类 Scientific American(二)月

超声成像 ultrasonic imaging 实时成像 real-time imaging 灰阶显示 gray scale display 彩阶显示 color scale display 经颅多普勒 transcranial doppler 彩色多普勒血流显像 color doppler flow imaging 彩色血流造影 color flow

发表于:2019-01-08 / 阅读(99) / 评论(0) 分类 医学英语

BEIJING, Aug. 10 (Xinhua) -- China is preparing for the launch of an experimental recoverable moon orbiter, said the State Administration of Science, Technology and Industry for National Defence on Sunday. The orbiter arrived in Xichang via air in so

发表于:2019-01-09 / 阅读(61) / 评论(0) 分类 英语新闻

New Horizons Space Probe Gets Mission Extension The U.S. space agency has announced it is extending the mission of the New Horizons spacecraft. New Horizons is a spacecraft without a human crew. It was the first spacecraft to visit the dwarf planet P

发表于:2019-01-12 / 阅读(73) / 评论(0) 分类 2016年VOA慢速英语(七)月

This gadget you see right here was called the digital wall mapper, 你们在这里见到的这个是电子墙体测绘仪, and it produced the first three-dimensional map anybody has ever done of a cave, and it happened to be underwater in Wakulla

发表于:2019-01-18 / 阅读(58) / 评论(0) 分类 TED演讲商业篇

22 布什称反弹道导弹条约为“冷战遗迹” Bush Calls ABM Treaty 'Cold War Relic' Deborah Tate Brussels 14 Jun 2001 00:33 UTC President Bush, on a week-long European tour, flies to Gothenb

发表于:2019-01-31 / 阅读(70) / 评论(0) 分类 VOA2001-国际风云(1)

Industry insiders are suggesting the Chinese government's anti-monopoly investigations of some foreign luxury car brands sold in China are coming to an end. It's being reported that local authorities in Shanghai and Hubei have confirmed infractions b

发表于:2019-02-06 / 阅读(66) / 评论(0) 分类 英语新闻

Top U.S. lawmakers are calling for more firings at the Secret Service, after a prostitution scandal diminished the reputation of the agents who protect the president. Three people have left the service as a result of the scandal. It is uncertain whet

发表于:2019-02-08 / 阅读(64) / 评论(0) 分类 英语新闻

The US Federal Bureau of Investigation has uncovered nearly 15,000 previously undisclosed emails to or from Hillary Clinton when she served as the Secretary of State. 美国联邦调查局近日发现了近1.5万封此前未曾公开的、希拉里克林

发表于:2019-02-13 / 阅读(42) / 评论(0) 分类 英语新闻

BEIJING, Apr. 16 (Xinhuanet) -- Educational authorities in Yunnan have launched a widespread investigation into a subsidized school meals project, following a series of suspected food poisoning cases affecting hundreds of students in the province. Th

发表于:2019-02-17 / 阅读(62) / 评论(0) 分类 英语新闻

BEIJING, March 23 (Xinhua) -- The Ministry of Commerce announced Friday it will launch an anti-dumping probe into toluene diisocyanate (TDI 80/20) imported from the European Union. A brief statement on the MOC's website said it will begin investigati

发表于:2019-02-17 / 阅读(87) / 评论(0) 分类 英语新闻

China on Tuesday released images of a Mars probe and rover which the country plans to send to the Red Planet within five years. 上周二,中国发布了火星探测器和火星车的图片,并计划在五年内将其发射到火星上。 China p

发表于:2019-02-18 / 阅读(40) / 评论(0) 分类 英语新闻

Australian police have launched a war crimes investigation into the deaths in East Timor in 1975 of the Balibo Five group of journalists. In 2007, an Australian coroner(验尸官) found that they were executed by Indonesian special forces in the town o

发表于:2019-02-19 / 阅读(65) / 评论(0) 分类 英语新闻

GRE填空选择答案有什么原则?要想获得理想的GRE考试成绩,对于GRE句子填空的解答一定要精准。这就要求考生对于GRE填空解答原则有所认识,下面和小编一起来看看吧: 在某些词组性质的习语中

发表于:2019-03-11 / 阅读(111) / 评论(0) 分类 GRE英语