单词:natural gasoline plant
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The study of natural history is not something to be left to biologists. In fact, their capacity in terms of the time they can spend away from their offices is very limited. Even if all professors in universities and research institutes could devote a
Agriculture Report - Getting a Firm Grip on Weed Control 农业报道 - 控制杂草生长的办法 This is the VOA Special English Agriculture Report. 这里是美国之音慢速英语农业报道。 When is a plant considered a weed? Experts at Pen
[00:09.40]Reading [00:10.55]STUDYING PLANTS IN THE WILD [00:12.25]The study of natural history is not something to be left to biologists. [00:17.99]In fact, their capacity in terms of the time they can spend away from their offices is very limited. [
[00:09.40]Reading [00:10.55]STUDYING PLANTS IN THE WILD [00:12.25]The study of natural history is not something to be left to biologists. [00:17.99]In fact, their capacity in terms of the time they can spend away from their offices is very limited. [
The Secret Life of Roots Plant roots are important to life on earth. Roots take in water and nutrients that the plant needs to live and grow. They also help secure plants in dirt to prevent erosion - the breakdown of soil by natural forces. Roots are
Researchers Find Bright Side to Some Invasive Species Non-native species present threats to natural environments across the world by pushing out native organisms. Their presence can seriously damage ecosystems that provide clean water, food and other
Unit 12 Transportation (II) Part I Warming up A. 1. Running two new express bus routes especially for the company's employees 2. Subsidizing the cost of bus fares and monthly passes 3. Encouraging carpooling 4. A guaranteed ride-home program A. Tapes
Guayule- A Promising Crop From The Desert D:Holy guayule,Yale. Y:Holy what? D:Guayule.It's a desert-dwelling shrub from the Southwest. Y:What about guayule?I never even heard of it. D:Several things.One of the most important features of the guayule p
Scientists found a prehistoric ancestor of an arrow worm among a group of fossils at two national parks in Canada. The fossils were found in what is now British Columbia, but was once an ocean. The sea worm was 10 centimeters long and had 50 spines o
This is the VOA Special English Agriculture Report. This season, American farmers expect to plant their biggest corn crop since World War Two. Growing demand for ethanol fuel is the driving force, along with strong export sales. Based on March estim
This is the VOA Special English Agriculture Report. When is a plant considered a weed? Experts at Penn State University have a simple answer: When the undesirable qualities outweigh the good qualities. Consider that crops generally produce several hu
Getting a Firm Grip on Weed Control This is the VOA Special English Agriculture Report. When is a plant considered a weed? Experts at Penn State University have a simple answer: When the undesirable qualities outweigh the good qualities. Consider the
AS IT IS 2016-10-09 Scientists Create Realistic Model of Dinosaur 科学家制作逼真的恐龙模型 British scientists have created what they believe is the best three-dimensional model of a dinosaur ever built. They say the model is almost the ex
Scientists in Poland Work to Save Honeybees 科学家在波兰致力于拯救蜜蜂 Honeybees are in danger worldwide. Their homes -- known as colonies -- are suffering from what scientists call Colony Collapse Disorder. Scientists have linked the di
AS IT IS 2016-11-28 Less Energy Now Produced by Coal in US South 目前,在美国南部,较少的能量由煤产生 Three large machines called turbines produce electricity at the Buck Combined Cycle Station in central North Carolina, near the town o
US Energy Company: Cleaner Technologies Make Good Business Sense 美国能源公司:清洁科技有利可图 BREMO BLUFF, VIRGINIA Even before the U.S. Environmental Protection Agency released its proposed rules this month for reducing carbon emiss
美国能源公司:清洁科技有利可图 Even before the U.S. Environmental Protection Agency released its proposed rules this month for reducing carbon emissions from the nations power plants, energy companies began converting older plants to c
文本: UMBERTO: Tommy, you go and get us a little Haitian car. When you get it, come back and pick up my boy. Pepe, and take him out to the Haitians. Then, you go around to the Haitians processing plant, and you use their solvent as an _(1)_. Boom
Prehistoric Amber Reveals Natural Ancient Alliance Scientists say a piece of amber - recently found in India and dating back at least 52 million years - offers proof of the ancient relationship between fungi and flowering trees, which sustains modern
Dr. Wangari Muta Maathai was born in 1940 in a village in Kenya. In 2004, she became the first African woman to receive the Nobel Peace Prize. The judges valued her contribution to sustainable development, democracy and peace. She was also a member o