标签：soil 相关文章

美国有线新闻 CNN 美国华盛顿州核废料隧道坍塌 初步检查未造成核泄漏

Earlier this week, there was a cave-in at a tunnel in Washington state. No one was hurt but officials scrambled to fix that quickly because it's part of the Hanford Facility, a nuclear waste site. The collapsed tunnel was covered in eight feet of soi

发表于:2018-12-02 / 阅读(73) / 评论(0) 分类 CNN美国有线新闻2017年6月

VOA慢速英语2009-Agriculture Report - The Seeds of 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 its undesirable qualities outweigh its good qualities. Consider this: Crops generally produce several

发表于:2018-12-15 / 阅读(57) / 评论(0) 分类 VOA慢速英语2009年（五）月

英语听力文摘 English Digest 524、闪电有助于肥沃土壤！

Lightning Helps Fertilize The Soil Our bodies need protein, and proteins contain nitrogen. The air we breathe has plenty of nitrogen to satisfy our needs. Butthat nitrogen is not available to us directly from the air. The only way we can get nitrogen

发表于:2018-12-31 / 阅读(50) / 评论(0) 分类 英语听力文摘 English Digest

英语听力文摘 English Digest 554、岩石怎么会出现在你的花园？

How Rocks Appear In Your Garden I wonder how many of us went out this past spring to get our gardens ready for planting, smug in the thought that last year we got rid of all the rocks. Theres that nice big mound of them in the corner of the garden wh

发表于:2018-12-31 / 阅读(45) / 评论(0) 分类 英语听力文摘 English Digest

VOA慢速英语2009-Agriculture Report - Want to Grow a Root? Beets

This is the VOA Special English Agriculture Report. Beets soaking in water Beets are a tasty root vegetable that do not require much work to grow. People might think beets are always dark red. But they can also be pink, yellow or white. Beets with c

发表于:2019-01-11 / 阅读(50) / 评论(0) 分类 VOA慢速英语2009年（二）月

VOA慢速英语2009年-Agriculture Report - Yard Work: When Peopl

This is the VOA Special English Agriculture Report. For some people, the road to immediate satisfaction is laid with sod. A piece of sod has grass on the top and soil on the bottom. It can provide thick green grass without the work or wait required

发表于:2019-01-11 / 阅读(88) / 评论(0) 分类 VOA慢速英语2009年（七）月

VOA慢速英语2009-Agriculture Report - Grow It Yourself: Strawberr

This is the VOA Special English Agriculture Report. One of the sweetest gifts of nature is a red, ripe strawberry. There are three basic kinds of strawberries: June bearing, ever bearing and day neutrals. June bearing are ready in the spring, so the

发表于:2019-01-11 / 阅读(53) / 评论(0) 分类 VOA慢速英语2009年（五）月

VOA慢速英语2012 Agriculture Report - Getting a Firm Grip on Weed Control

Agriculture Report - Getting a Firm Grip on Weed Control 农业报道 - 严格控制杂草 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 Penn State U

发表于:2019-01-12 / 阅读(77) / 评论(0) 分类 2012年VOA慢速英语(六)月

VOA慢速英语2014 AS IT IS 2014-03-02 Building a Windbreak to Protect Crops 建设防风保护农作物

Building a Windbreak to Protect Crops建设防风保护农作物 Welcome to As It Is, from VOA Learning English. Im Karen Leggett in Washington. Thanks for joining us. 欢迎光临，As It Is美国之音学英语。我是Karen Leggett在华盛顿。感

发表于:2019-01-12 / 阅读(74) / 评论(0) 分类 2014年VOA慢速英语(三)月

2006年VOA标准英语-African Leaders Meet to Tackle Food Crisis

By Gilbert Da Costa Abuja 11 June 2006 An elderly woman carries part of the food ration she received from the World Food Program in the drought-stricken southern Somali town of Wajid (file) African leaders, farmers and international agriculture expe

发表于:2019-01-13 / 阅读(121) / 评论(0) 分类 2006年VOA标准英语（六月）

VOA标准英语2009年-Erosion Wreaks Havoc in Southeastern Niger

By Gilbert da Costa Abuja 31 October 2009 Massive environmental degradation has been the subject of heightened concern across southeast Nigeria as the region continues to be plagued by an erosion crisis that has grown worse over the years. Driving a

发表于:2019-01-14 / 阅读(75) / 评论(0) 分类 VOA标准英语2009年(十一月)

英语听力文摘 English Digest 74、干旱的成因

For those of us lucky enough to always have enough food and water, it may be hard to imagine living through a drought. A drought occurs for a variety of reasons, usually including a lack of rainfall and warm temperatures.Soil moisture severely dwindl

发表于:2019-01-26 / 阅读(81) / 评论(0) 分类 英语听力文摘 English Digest

VOA标准英语2011--US Troops Return from Iraq to Reflect on Their Future

US Troops Return from Iraq to Reflect on Their Future Thousands of troops have been returning to bases in the United States as Washington completes its drawdown of forces in Iraq. At Fort Hood in the U.S. State of Texas, where planeloads of soldiers

发表于:2019-02-03 / 阅读(49) / 评论(0) 分类 VOA标准英语2011年(十二月)

2007年VOA标准英语-Drought, Floods Fuel Australian Climate Change

By Phil Mercer Goulburn, Australia 05 July 2007 A long drought and recent floods have intensified debate in Australia over climate change. Many Australians believe man's reliance on fossil fuels is warming the earth, while skeptics say it is all part

发表于:2019-02-03 / 阅读(95) / 评论(0) 分类 2007年VOA标准英语（七月）

2007年VOA标准英语-US Defense Secretary Cautions Turkey Not to Con

By Purnell Murdock Washington 03 June 2007 US Defense Secretary Robert Gates right, and General Peter Pace, US Chairman of the Joint Chiefs of Staff, in Singapore, 03 June 2007 U.S. Defense Secretary Robert Gates has cautioned Turkey against sending

发表于:2019-02-11 / 阅读(91) / 评论(0) 分类 2007年VOA标准英语（六月）

英语听力文摘 English Digest 390、干旱知识ABC

Drought For those of us lucky enough to always have enough food and water, it may be hard to imagine living through a drought . A drought occurs when for a variety of reasons, usually including a lack of rainfall and warm temperatures. Soil moisture

发表于:2019-02-16 / 阅读(42) / 评论(0) 分类 英语听力文摘 English Digest

英语听力文摘 English Digest 205、喜欢毒素的树

Toxin-loving Trees 树木能调节气候,保持生态平衡，树木通过光合作用，吸进二氧化碳,吐出氧气,使空气清洁，新鲜。一亩树林放出的氧气够65人呼吸一辈子。树还能防风固沙，涵养水土,吸收各种粉

发表于:2019-02-24 / 阅读(153) / 评论(0) 分类 英语听力文摘 English Digest
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