单词：combustion chamber block
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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)
今天学的词组是block。Block有障碍物的意思。比如road block -- 路障，Police put up a road block to stop the demonstrators, 警察为阻止抗议者设置了路障。作为动词，block也有阻塞，拦阻的意思。比如施工造成
英语每日一词
[00:03.00]hold [00:03.41]hold n.把握, 把持力, 柄, 控制, 监禁, 掌握, 货舱 vt.拿着, 保存, 支持, 占据, 持有, 拥有 vi.支持, 保持, 有效 n.控制, 保留 [00:06.29]holiday [00:06.70]holiday n.假日, 节日, 假期 [00:09.38]home [00:09.78]home n.家, 住宅, 家乡, 本
英语1000高频词汇
英语基础--《英语1000高频词汇》(英语学习必须熟悉的1000词汇) 这是英语词汇中最基础的、使用频率最高的，约1000个词汇，不管是中学毕业还是大学毕业，这1000个单词都应该非常熟悉，因为这些单词真的太基础了，使用频率非常高。 如果听过《朗文词典》能用3000以内的单词
英语1000高频词汇
[00:03.61]I pron.我 n.字母I, [化]碘元素, 罗马数字1 [00:12.52]ice [00:13.12]ice n.冰冻食品 vt.冰冻, 覆以冰 vi.结冰 abbr.[军] Intenal Combustion Engine, 内燃机 [00:23.94]ice cream [00:24.54]ice cream n.冰淇淋 [00:30.65]idea [00:31.25]idea n.想法, 念头,
英语1000高频词汇
10. The Future of Cars 10. 汽车的未来 The fact is, when we do our market research around the world, we see that there's nearly a universal aspiration on the part of people to own an automobile. And 750 million people in the world today own a car
历史英雄名人演讲
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
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
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. On March 11th, Interior Secretary Ken Salazar called for a moonshot for energy independence. Hes set up a task force to look into the large-scale product
Scientific American(三)月
Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到 听力原文收集区 ，您将会获得10到30积分的奖励! Thank you！
英语单词荟萃
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)
RACHEL MARTIN, HOST: Back in January, we introduced you to the Rahimov family. They had immigrated from Uzbekistan, and we met them on the day they became U.S. citizens in Kansas City, Mo. In that story, we heard 16-year-old Murad Rahimov talk about
2017年NPR美国国家公共电台8月
HOUSTON, July 25 (Xinhua) -- A shelter-in-place was ordered after a battery caught fire during a testing at NASA's Johnson Space Center Monday morning. A battery was being tested inside a containment system when it got overheated and caught fire at a
英语新闻
By Deborah Tate Capitol Hill 06 February 2007 watch video report by J. Fry U.S. Senate Republicans have used a procedural vote to block a bipartisan, nonbinding resolution opposing President Bush's plan to send more troops to Iraq. It is a defeat fo
2007年VOA标准英语（二月）
WASHINGTON, Aug. 31 (Xinhua) -- The Justice Department of the United States on Wednesday filed an antitrust lawsuit to block AT T's acquisition of T-Mobile, Deputy Attorney General James M. Cole said at a press conference. Cole said that four nationw
英语新闻
More Than Birdies And Backyards: This Olympian Will School You On Badminton STEVE INSKEEP, HOST: That let's talk about some of the other Olympic sports, not the ones that suck up the attention, like swimming, gymnastics, track and field. There are a
2016年NPR美国国家公共电台8月
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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