单词:water preheater
单词:water preheater 相关文章
Two kids from Tacoma In a '72 Nova, No pill and barely old enough to drink, Learned the ropes and tested science, Started pentecostal riots, In just five minutes behind the rolling rink, In the backseat brings The American dream on a shoestring, Firs
Ben leaned over the edge of the tub. He turned on the hot and cold water faucets. The water came out of the spout near the top of the tub. He pushed down on the lever beneath the spout so that the water would drain. He was going to take a shower, not
Oxfam: Power, Water Shortages in Goma As fighting continues in the eastern DRC between government forces and M23 rebels, the humanitarian crisis is growing worse. Oxfam says its stepping up efforts to help about 80,000 people in and around Goma, the
Technology Report - How to Do It: Making Paper by Hand This is the VOA Special English Technology Report. The earliest process of making paper was done almost five thousand years ago in Egypt and the Nile Valley. In those days, paper was made from st
This is the VOA Special English Agriculture Report. 这里是美国之音慢速英语农业报道。 Scientists have worked for twelve years to develop what they call Green Super Rice. They say several varieties should be available to farmers about t
Floods Challenge Midwest Farmers On his land outside Peoria, Darrel Kammeyer is keeping one eye on the rising Illinois River and another on the only thing standing between it and his farmland, a seven-meter-tall levee. It was constructed to hold back
Lucy preheats her oven and then takes out a package of ready-made cookies. 露西预热她的烤箱,然后拿出一包现成的饼干 。 To preheat, preheat, means to heat, in this case, the oven to get it ready to cook something. 预热,预热,
Mike washed his hands. He washed his hands with soap and water. He brushed his teeth. He brushed his teeth with toothpaste and water. He turned off the water. The sink was full of water. The water did not go down the drain. The water stayed in the si
By Gilbert da Costa Nasawara 16 February 2007 Former U.S. President Jimmy Carter is known in Nigeria as the architect of a sustained campaign to rid the country of Guinea worm disease. Guinea worm is a water-borne worm infection that is contracted w
By Cathy Majtenyi Nairobi 29 May 2006 Experts from around East Africa are meeting this week in Kenya's capital to discuss how to supply one of the continent's most basic needs, clean water. In many East African cities large areas have no access to r
Scientists at the Massachusetts Institute of Technology have turned to Mother Nature for inspiration, inventing a device that mimics photosynthesis, the process plants use to convert sunlight and water into usable energy. MIT chemistry professor Dani
Stevia: a Sweetener for Kenyan Exporters and Farmers Pockets Stevia, known worldwide as a natural sweetener, comes from plants that are grown in the tropics and subtropics. The leaves of the popular plant are sweet and ideal for people conscious of t
KELLY MCEVERS, HOST: For millions of Americans, what they flush down the toilet goes into a septic tank. Septic tanks are convenient, but sometimes they pollute our waterways. Scientists are trying to track down that pollution with help from a federa
Like these sea fans, the last frontier of life on the reef. The divers reach their target-- a massive ridge, 190 feet down. Here, the air they are breathing is under pressure, squeezed down so that there's more gas in every lungful. They have to hope
For thousands of years, this powerful current has regenerated the reef. But it can not repair everything. Beneath the waves lie deeper scarsthe largest coral reef on Earth is home to a dazzling diversity of marine species, some found nowhere else on
Here it is. Got it, I think. A spring. And whats actually coming out of this is fresh water. You can drink. You see this stuff bubbling out? This is what the traditional owners of this place call 'buiur bindi''fresh water in the ocean'. The locals ca
By Greg Flakus Uncertain, Texas 08 February 2008 Environmentalists and conservationists work to protect natural areas around the world and are often supported in by local people who want to maintain their rural lifestyle. One such place is Caddo Lake
And its here in a freezer that Messenger will encounter another puzzle: can ice exist on a planet so close to the sun? It's only when the first radar observations to the surface of Mercury were obtained back in the 90s that it was discovered that Mer
Texas Farmers Want More Crop Per Drop With water scarcity emerging as a major global issue in the 21st century, a drought in the southern U.S. state of Texas highlights the need for farmers to get more out of limited water supplies. Some are using ne
Achieving the Perfect Shower There are two types of people in this worldshowers and bathers. (Well, I guess a third category would be those who do neither, but Id rather not explore that.) Im a lifelong devotee to the nighttime shower; for me, theres