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每周一聽——那些年我們一起練過的聽力(第36期) 已有50人參與
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[ Last edited by 求知者001 on 2012-11-10 at 14:45 ] |
風(fēng)之聲-每周一聽 | 我的寶貝家園 | english |

銅蟲 (初入文壇)
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感謝大家支持,上期活動(dòng)鏈接:http://www.gaoyang168.com/bbs/viewthread.php?tid=5137914&fpage=1。 上期活動(dòng)講解 詞匯講解: 1. direct adj. 直接的;直的 例句:1.Foreign direct investment increased steadily. 外商直接投資穩(wěn)步擴(kuò)大。 2. increase vt. 增加,增大,增多 例句:We need to increase our visibility. 我們需要提高自己的知名度。 3. estimate vt. 估計(jì),估算 例句:His estimate of the situation was sober. 他對(duì)形勢(shì)的估計(jì)是審慎的。 4. widespread adj. 廣泛 例句: The high cost prohibits the widespread use of the drug. 該藥昂貴而影響廣泛應(yīng)用. 5. protect vt. 保護(hù) 例句:Game laws protect wild life. 狩獵法保護(hù)野生動(dòng)物。 6. publish vt. 發(fā)表 例句:You must hasten and publish your result. 你必須趕快公布你的結(jié)果。 短語講解: 1. Mr. Reganold says poor soil may have resulted from years of weathering that washed away many nutrients. result from 由于 例句:Nothing will result from their airy plans. 他們那些不切實(shí)際的計(jì)劃不會(huì)有什么結(jié)果。 2. The method is gaining widespread use in countries such as Niger, Burkina Faso, Malawi and Zambia. such as 諸如 例句:Fuels such as coal or oil. 諸如煤或石油之類的燃料。 3. They not only add nitrogen to the soil through their roots, through their leaves when they fall off and break down. not only...but (also) 不但...而且... 例句:These not only help in presentation but also help orient users. 這不僅有助于表達(dá),而且可以幫助使用者在創(chuàng)建時(shí)更好地定位。 break down 損壞 例句:What guarantee do I have that it won't break down easily? 有什么保障它不會(huì)輕易出故障? Studies show farmland in Africa is often lacking in important nutrients. But researchers say a combination of farming methods may help. 研究表明,非洲的農(nóng)田往往缺乏重要營養(yǎng)成分。但研究人員稱,結(jié)合耕作方式有助于改善這種情況。 Since the world food crisis several years ago, researchers have directed more of their attention to small farms. Most farms in areas south of the Sahara Desert are only about one or two hectares. One of the goals is to increase production without necessarily clearing more land to grow additional crops. 自從幾年前世界糧食危機(jī)以來,研究人員將更多的注意力放在小型農(nóng)場(chǎng)上。在撒哈拉大沙漠以南地區(qū)的大多數(shù)農(nóng)場(chǎng)是只有一,兩公頃。其目的之一就是在不必開墾更多土地或種植其他作物的情況下達(dá)到增產(chǎn)。 American researchers say that can happen with greater use of an agricultural system called perenniation. It mixes food crops with trees and perennial plants – those that return year after year. 美國研究人員稱,應(yīng)用更為廣泛使用的農(nóng)業(yè)系統(tǒng),或稱為perenniation,可以達(dá)到該目標(biāo)。它將糧食作物與樹木和多年生的植物相結(jié)合—那樣就可以年復(fù)一年的收獲。 Soil scientist John Reganold is with Washington State University. 土壤科學(xué)家John Reganold就職于華盛頓州立大學(xué)。 JOHN REGANOLD: “One of the major problems (is that the) soils are fairly poor in most of the regions. So how do you grow food on poor soils? There have to be food production systems that can build the soil and improve the yield.” JOHN REGANOLD: “主要問題之一是大多數(shù)地區(qū)的土壤比較貧瘠。你如何在貧瘠的土地上種植食物呢?已有的糧食生產(chǎn)系統(tǒng)可以培養(yǎng)土壤和提高產(chǎn)量! Mr. Reganold says poor soil may have resulted from years of weathering that washed away many nutrients. He says some farmers may have done more harm than good. Reganold先生稱,土壤貧瘠可能是因?yàn)槎嗄甑娘L(fēng)化,沖走了許多營養(yǎng)物質(zhì)。他說,一些農(nóng)民可能也做過弊多利少的事情。 JOHN REGANOLD: “They have been actually using farming practices where they’re not putting in organic matter. They’re not putting in fertilizers. They can’t afford those things. And it just runs the soil down. So they’re worsening the situation.” JOHN REGANOLD: “他們實(shí)際的耕作方式是不投放有機(jī)物,不施肥。他們買不起這些東西。而這讓土壤更加貧瘠。因此,他們是在讓情況惡化。.” He estimates that up to two billion dollars worth of nitrogen, phosphorous and potassium is lost from African soil each year. 據(jù)他估計(jì),每年有價(jià)值兩億美元的氮,磷,鉀在非洲土壤中流失。 The scientist says the word perenniation defines three systems that are already used in Africa. The oldest of the three is called evergreen agriculture. This is where farmers plant trees with their crops. John Reganold says farmers in Africa have been doing this for sixty years, but it seems to be growing in popularity. 科學(xué)家稱,perenniation定義三種系統(tǒng)已經(jīng)在非洲使用。三種之中最古老的稱為常綠農(nóng)業(yè)。這種是農(nóng)民將樹與莊稼種植在一起。John Reganold稱,非洲農(nóng)民使用這種方法種植已有六十年,而且似乎越來越受歡迎。 The method is gaining widespread use in countries such as Niger, Burkina Faso, Malawi and Zambia. The trees are planted among maize, millet or sorghum crops. They not only add nitrogen to the soil through their roots, but also through their leaves when they fall off and break down. At other times of the year, the trees can protect plants from strong sunlight. 這種方法在像尼日爾,布基納法索,馬拉維和贊比亞這樣的國家被廣泛使用。樹木被種植在玉米,小米或高粱作物之間。他們不僅會(huì)通過根部增加土壤中的氮。而且他們的葉子脫落后會(huì)分解。在其他時(shí)候,樹木可以保護(hù)作物免受強(qiáng)烈陽光的照射。 John Reganold says he knows of one woman who has had great success with perenniation. John Reganold稱,他認(rèn)識(shí)一個(gè)通過perenniation已經(jīng)取得巨大成功的婦女。 JOHN REGANOLD: “She’s a grandmother in her fifties. Her name is Rhoda Mang’yana and she started using this system about twenty years ago. And her yields initially were about a ton of maize. Now with a good year she gets four tons per hectare. Four times what she was getting.” JOHN REGANOLD: “她是一個(gè)五十多歲的奶奶。她的名字是Rhoda Mang’yana,她大約20年前開始使用該系統(tǒng)。最初的產(chǎn)量約有1噸玉米。而現(xiàn)在在好的年份,她能在一公頃地收獲4噸玉米。是以前的4倍之多! Mr. Reganold was one of three researchers who wrote a report about perenniation. It was published in the journal Nature. Reganold先生撰寫關(guān)于perenniation系統(tǒng)報(bào)告的三名研究員之一。他的文章發(fā)表在《自然》雜志上。 |

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