单词：combustion chamber outlet mach number
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We're starting in the U.S. landmark of Capitol Hill, where congressional Republicans and U.S. President Donald Trump had been working on a new healthcare plan. It would repeal and replace a health care law passed in 2010 by congressional Democrats an
CNN美国有线新闻2017年9月
NASA Successfully Tests Hypersonic 1 Jet Three years after its first test flight ended in an explosion, NASA on March 27 successfully launched an experimental jet that the agency believes reached a re
英语沙龙2004全年合辑下
美国动力公司研发提升五成油效对置活塞二冲程发动机 This little engine looks like it has only three pistons, but in fact, it has six, sharing only three cylinders. 这台小身材引擎看起来只有3个活塞,但事实上却有
VOA标准英语2016年(三月)
What Do Octane Numbers Mean? At the gas pump, you have a choice of octane numbers. 87? 93? Whats the difference? To explain octane numbers, lets take an imaginative leap into the internal combustion engine of a car. Inside the cylinders are combustio
英语听力文摘 English Digest
The sound of sucessful old bands Boy band Take That have made their comeback complete with their first UK number one single in more than a decade. 'Patience' climbed to the top spot after landing at number four a week ago based on download sales alo
Take Away English
阿根廷国会批准司法改革 BUENOS AIRES, April 25 (Xinhua) -- Argentine lawmakers on Thursday passed a reform bill that paved the way for a controversial judicial reform, local media reported. After an overnight debate lasting nearly 19 hours,
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This is Scientific Americans 60-Second Science, I am Cynthia Graber .This will just take a minute. How can we improve engines, inhalers and fire extinguishers? Maybe by copying a beetle. The bombardier beetle's name might scare off predators if they
Scientific American(四)月
Last week, Rwanda became the first nation to elect a majority of women to its legislative assembly. It has been a long road since the 1994 genocide, when many women were raped or widowed. Some in the country hope that having more mothers in parliame
VOA标准英语2008年（九月）
By George Dwyer Washington, D.C. 27 March 2006 watch Hispanic Business report A new report from the United States Census Bureau shows that between 1997 and 2002, Hispanic-owned businesses grew nearly
2006年VOA标准英语（三月）
As the number of the H1N1 cases in Australia surges past 1,200, Singapore is warning its citizens to avoid travel to the badly affected southern state, Victoria. With more than 1,000 cases, Victoria has the world's highest per capita rates of infect
VOA标准英语2009年(六月)
By Greg Flakus Huntsville, Texas 21 October 2009 The U.S. state with the busiest death chamber and one of the largest prison populations is Texas, where public opinion polls show the death penalty is supported by more than 70 percent of the populati
VOA标准英语2009年(十月)
This Internal Combustion Engine is 50% More Efficient 新型内燃机效率提高50% Internal combustion engines in cars may be on their way out, but experts agree it will take a few decades before electric-powered vehicles become dominant. Meanwhile
VOA标准英语2016年(三月)
Boy band Take That have made their comeback complete with their first UK number one single in more than a decade. 'Patience' climbed to the top spot after landing at number four a week ago based on download sales alone. The group's first number one w
英语听力精选进阶版
Happy Friday. Im Sara Haines and its time for some pop news, the top four stories buzzing online right now. Coming in at number four, Harry Potter fans, you're about to feel like you'd taken Felix Felicis, which is liquid luck. Author J.K. Rowling ha
访谈录2015年
Resuscitating Lungs for Transplant A study in the journal Science Translational Medicine details a new procedure for making damaged, donated lungs functional, potentially doubling the number of lungs available for transplant. Cynthia Graber reports E
60秒科学
The NPC and CPPCC sessions are being closely watched by people from outside of China. CCTVs reporters have spoken with people from around the world to find out how they see China and its recent development. China is an economic miracle and it's visib
cctv9英语新闻2015年
Anirudh Sharma doesn't just want to pull harmful carbon from the air. He wants to offer a cheaper alternative to the exorbitant costs of ordinary printer ink. 阿尼鲁德夏尔马不仅想除掉空气中的有害炭物质，还希望创造一种更便
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Here are some of the best interview questions that have been asked at Wall Street firms。 以下是华尔街面试中曾被问到的一些犀利问题。 Some tests are to see how well you solve problems analytically。有些旨在测试你分析解决
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The local government in the Indian capital has said that private vehicles with odd and even registration numbers will only be allowed to operate on alternate days to curb pollution. 印度首都新德里出台私家车单双号限行政策来控制污染
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The local government in the Indian capital has said that private vehicles with odd and even registration numbers will only be allowed to operate on alternate days to curb pollution. 印度首都新德里出台私家车单双号限行政策来控制污染
英语新闻