单词：contra-rotating propellers
单词：contra-rotating propellers 相关文章
The cormorant gives up for now. The bird has been foiled by the clarity of the water, the very thing that enables the manatee to thrive. The light through these waters helps plants flourish, and manatees are strict vegetarians. They can eat a hundred
自然百科2009年
[00:00.00]16 Business [00:04.70]2.While you read [00:11.18]A self-made man [00:14.84]Damo Setiadi is one of the top thousand richest men in Indonesia- [00:23.30]not bad for someone who was born into a huge family [00:28.87]in a tiny village in the mi
创新国际英语教程 学生用书 2
No one is unaware of the name of that famous English shipowner, Cunard. 英国著名的船主苟纳尔的名字是没有一个人不知道。 In 1840 this shrewd industrialist founded a postal service between Liverpool and Halifax, 这位精明的企业
《海底两万里》中英双语有声读物
[00:02.92]I guess I'm kind of hoping you'll come back over the rail 所以，我希望你下来 [00:04.68]and get me off the hook here. 别让我为难 [00:07.52]You're crazy. 你疯了 [00:08.64]That's what everybody says, but with all due respect,
听电影学英语—泰坦尼克号
骑车上天：单人飞行器接近成为现实 Smart phones, essentially pocket-sized computers, we already have. Flying drones with cameras are available to everybody. Robots and self-driving cars are just around the corner. Now, two groups of inv
VOA双语新闻 2015年6月
A robot entered a damaged reactor at Japan's Fukushima nuclear plant this week to take pictures of the reactor destroyed by an earthquake and tsunami in 2011. The robot, nicknamed 'The Little Sunfish,' is very small about the size of a loaf of bread.
2017年VOA慢速英语(七)月
Zhang Zhaozhong, a retired rear admiral and TV commentator, has inspired a postgraduate student to invent a new device and apply for a national patent. 张召忠是一名海军退休将领和电视评论员，他启发了一名研究生，使得后者发
英语新闻
[00:04.70]2.While you read [00:11.18]A self-made man [00:14.84]Damo Setiadi is one of the top thousand richest men in Indonesia- [00:23.30]not bad for someone who was born into a huge family [00:28.87]in a tiny village in the middle of nowhere. [00:3
创新英语教程第二册
Personal Flying Vehicles Close to Reality 个人飞行汽车的梦想接近现实 Many people have long dreamed of being able to fly around as simply as riding a bicycle. Yet the safety and strength of a flying bike was always a big problem. Over the
2015年VOA慢速英语(七)月
AS IT IS 2015-03-11 IATA: 2014 Is the Safest Year Ever for Airlines 国际航空运输协会称2014年是最安全的航空年 The International Air Transport Association is calling 2014 the safest year ever for commercial aviation. The association s
2015年VOA慢速英语(三)月
AS IT IS 2016-05-13 US Drone Maker to Fly Medicine in Rwanda 美国无人机向卢旺达运送药品 An American drone maker is teaming up with United Parcel Service to transport blood and medical supplies in Rwanda. 美国一家无人机制造商与联
2016年VOA慢速英语(五)月
Charitable Giving Ingrained in US Culture It is Tuesday morning and cars line up at the Salvation Army Center in Alexandria, Virginia. Maria and Ingrid are donating some things they dont use any more. I feel awful - there are a lot of the clothes, wh
VOA标准英语2012年(四月)
Giant Airship Could Move Huge Amounts of Cargo The prototype unveiled in this immense World War II hangar near Los Angeles is just half the size of the final working model. But the prototype is massive, at 75-meters-long. It is wide, flattened on the
VOA标准英语2013年(三月)
新型单人飞行器有望成为未来空中飞车 Being able to fly around as simply as riding a bicycle has been a long-standing dream of many inventors. But the safety and stability of such vehicles was always a huge problem. 飞行器飞来飞去能
VOA标准英语2015年(十二月)
The islands of Svalbard in Arctic Norway. They might be remote, but they are under surveillance. Spy cameras are capturing the most intimate images ever taken of polar bears. They're revealing some remarkable behavior and discovering an animal of sur
自然百科2010年
Joerg Weigl, who came up with the idea and is one of the supervisors of the project, said he wanted Snowstorm to help people realize their dreams of flying. Because flying is now a community. People can now fly with a jetliner, but the feeling of fly
英语新闻
Drones That Launch Flaming Balls Are Being Tested To Help Fight Wildfires STEVE INSKEEP, HOST: And I'm Steve Inskeep with yet another use for drones. You already know they're used for surveillance and taking video. Now researchers want to use them to
2016年NPR美国国家公共电台8月
On August 6th a flimsy-looking pilotless aircraft, the Zephyr S, came slowly in to land at an undisclosed location in Arizona, 8月6日，一架薄得像纸一般的无人驾驶飞机Zephyr S在美国亚利桑那州的一个未知地点缓慢着陆，
经济学人科技系列
Science and technology 科学技术 Marine technology 船舶技术 A voyage of discovery 探索未知之旅 New technology can make ships more versatile, more efficient and cleaner, too 新技术使轮船更万能、更高效、也更环保 IN THE da
经济学人科技系列
Forget the drive-thru, now you can eat your Big Mac and fries at an air-mazing McDonald's restaurant on this decommissioned aircraft. 忘掉汽车餐厅吧！现在你可以在这架退役飞机上的麦当劳享用巨无霸和薯条啦！ For the la
英语新闻