单词:low water level cut-off device
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Low-Lying Areas of New York City Suffer Flooding Sounds of sump pumps fill the air in low-lying areas of New York City. Don, a water systems professional in Brooklyn, has been on the job, pumping out basements since before dawn. He says the worst flo
ARI SHAPIRO, HOST: For decades, the Colorado River has fed growing cities from Denver to Los Angeles, and a lot of the produce in grocery stores across the country right now was grown with Colorado River water. Now with climate change and severe drou
This is Scientific Americans 60 Second Science, I am Sophie Bushwick, got a minute. Kindles, Nooks and other e-readers catch flack for threatening the future of printed books. But reading itself may get a boost from the devices. For example, a study
Broadcast: May 12, 2003 By Jill Moss This is the VOA Special English Development Report. Each year, millions of people in Bangladesh drink ground water that has been polluted by naturally high levels
DEVELOPMENT REPORT – How to Make a Solar Water Heater By Gary Garriott Broadcast: Monday, November 29, 2004 I'm Gwen Outen with the VOA Special English Development Report. Solar water heaters save o
As the migrating herds arrive in the plateaus river valleys, the spring is here. This is why they have made the journey after the famine of winter. Food is everywhere. Birds have flown in from as far away as the Arctic and subtropics. Canada geese jo
By Cathy Majtenyi Nairobi 19 May 2008 Fuel efficient stoves and ceramic water purifiers are two examples of low-tech innovations that can help people in poor countries improve their quality of life. Because what is known as appropriate technology usu
DEVELOPMENT REPORT - Shining a Light on Water to Prevent Infections By Jill Moss / Broadcast: Sun, 11 Nov 2007 16:00:00 UTC This is the VOA Special English Development Report. Viruses, bacteria and other organisms in dirty water sicken hundreds of m
Scientist to Sequence Genes in Space 科学家在空间站研究基因序列 On Earth, American astronaut Kate Rubins researched some of the deadliest diseases like Ebola. Now, while orbiting the planet in the International Space Station, she will be
AS IT IS 2015-10-06 Beach Mat Charges Mobile Phone 黎巴嫩小伙开发能为手机充电的沙滩垫 Some people do not like being separated from their telephone, even while enjoying a restful holiday at the beach. So, a university student from Leb
RACHEL MARTIN, HOST: When Meghan Markle marries Prince Harry, whatever she wears is guaranteed to cause conversation. But as NPR's Neda Ulaby reports, these days she's not the only one. NEDA ULABY, BYLINE: When it comes to the bridal bust line, the q
AILSA CHANG, HOST: Scientists announced today that they have figured out the cause of an outbreak of Legionnaires' disease in Flint, Mich., a few years ago. Twelve people died. This was at the start of the city's water crisis. And the problem was a l
The living is easy. But it won't last long. At this altitude, the air is so dry that rain evaporates before it even hits the ground. The water that flows off the plateau is no longer being replaced. Already there is drought in forests beyond the mead
DEVELOPMENT REPORT - Need to Dig a Well? Start HereBy Gary Garriott Broadcast: Monday, May 15, 2006 This is Shep O'Neal with the VOA Special English Development Report. There are several low-cost ways
DEVELOPMENT REPORT - Simple Ways to Keep Food Cool By Bob Bowen Broadcast: Monday, September 05, 2005 I'm Faith Lapidus with the VOA Special English Development Report. Bacteria can make foods go bad.
今天我们要学的词是clear-cut。 Clear-cut, 是清楚的,明确的。There was no clear-cut winner in the debate, 这场辩论没有明确的胜利者。Last year's championship team is not the clear-cut favorite for this season, 去年的冠军
今天我们要学的词是clear-cut。 Clear-cut, 是清楚的,明确的。There was no clear-cut winner in the debate, 这场辩论没有明确的胜利者。Last year's championship team is not the clear-cut favorite for this season, 去年的冠军
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
WASHINGTON, March 30 (Xinhua) -- A trace amount of radioactive(辐射性的) iodine(碘) has been found in a sample of milk from the west state of Washington, the U.S. Environmental Protection Agency and the Food and Drug Administration (FDA) sai
TAKE a look at your mobile device. Do you see oily fingerprints and lint on the touch screen? Dust and crumbs forming particulate frost in the corners? Is that a hair stuck at the screen's edge? 看看你的移动设备。看到触摸屏上油油的指