单词：injection piston
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用Mp3背六级单词
Injection Drug Use Helps Drive HIV/AIDS in Africa Injection drug use has long been a driving factor in the HIV/AIDS epidemic in Eastern Europe and Central Asia. But now, there are signs it's a growing problem in sub-Saharan Africa, as well. The Washi
VOA标准英语2011年(四月)
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)
A:Welcome to Als Garage. What seems to be the problem? B:No problem at all! I am taking a long road trip and I want to make sure my car is in good mechanical condition. A:Very wise decision. When was the last time you had a tune up? B:Not that long a
纯正地道美语
[00:03.50]第十五部分 打针 [00:07.00]1.Is this where I come for an injection? [00:13.68]打针是在这儿吗? [00:20.35]-Yes.Can you show me your prescription, please? [00:26.08]是的,请让我看看医生的处方好吗? [00:31.82]2.Oh,penicillin.Do you know if you are
医疗服务英语
By Alan Silverman Hollywood 10 June 2006 A scene from 'Cars' A talented young race car learns what is important in life when he gets stuck in a small town in the new feature from Pixar, the animation studio with a history of family hits including To
2006年VOA标准英语（六月）
By Greg Flakus Albuquerque, New Mexico 25 July 2007 Large scale collection of solar power arrays As the world searches for ways to produce energy without burning fossil fuel, there is increased interest in solar energy. One place associated with sola
2007年VOA标准英语（七月）
Ocean Floor Reveals Past Climate Changes Time capsule Lamont research professor Maureen Raymo, the director of the Core Repository, slides open a long, narrow drawer from the cabinet. Like thousands of others here, the drawer contains a long, thin cy
VOA标准英语2012年(一月)
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)
多架二战战机飞过华盛顿上空 致敬退伍老兵 More than 50 World War II-era planes flew in formation over the World War II Memorial in Washington Friday, marking the 70th anniversary of the end of the conflict in Europe. 超过50架曾在二
VOA标准英语2015年(十月)
WWII-era Warplanes Fly Over Washington 多架二战战机飞过华盛顿上空 Seventy years after the Second World War ended in Europe, warplanes of that era still attract a lot of attention and admiration, both for their designers and the crews tha
VOA标准英语2015年(五月)
STEVE INSKEEP, HOST: Philadelphia is looking at a new tool to fight opioid addictions - supervised injection sites. That's where people can safely inject heroin or other opioids under medical supervision. It would be the first such site in the U.S.,
2018年NPR美国国家公共电台1月
Watchful Eyes: At Peer-Run Injection Sites, Drug Users Help Each Other Stay Safe AILSA CHANG, HOST: To prevent overdose deaths, several U.S. cities are considering opening safe injection sites where users can get high under medical supervision. Offic
2018年NPR美国国家公共电台7月
Coffee, computers and piston engines - could we imagine a world without them? These are intricate parts of every day life for most of us and the knowledge that led to them was either invented by or passed down through the ancient Muslim world. That's
VOA标准英语2010年(二月)
A group of senior students from Zhejiang University have successfully developed an air hand-washing device. 浙江大学的一队大四学生成功研制出了空气洗手装置。 The device utilizes an infrared ray induction system, which detects t
英语新闻
DAVID GREENE, HOST: The state of Arkansas has a death penalty problem. The state is rushing to execute death row inmates at an unprecedented pace this month before its supply of lethal drugs expires. The expiration date is important because it's gett
2017年NPR美国国家公共电台4月
When Dusty learns that his engine is damaged and he may never race again, he shifts gears and is launched into a world of aerial firefighting. I thought it was a great start. I knew that it would be a more of a harrowing adventure. The first film was
CCTV9英语新闻2014年07月
Track One From a very young age I had a bit of a fascination with flying 我自儿时便有些迷上了飞行 Bit of a fascination with speed 着迷那样的高速（驾驶） As I went through school and into my A-Levels I wanted to pursue a flying
英语PK台