Most rainforest soils are thin and poor because they lack minerals and because the heat and heavy rainfall destroy most organic matter in the soils within four years of it reaching the forest floor.
大多数雨林土壤都很贫瘠，因为它们缺乏矿物质，而且高温和强降雨会在到达森林地面后的4年内破坏土壤中的大部分有机物。
Parkson will triple its number of stores to almost 90 within four years.
而百盛打算在4年内把店铺的数目扩充到近90家，这是目前数目的3倍。
The goal will be to deploy some of the tested technologies within four years.
目标是在四年内部署实施目前处于测试阶段的技术。
The tariff on Australia's dairy industry will be canceled within four years.
将在四年内取消澳洲奶制品行业关税。
If all goes according to plan, Shenoy expects implants for lab animals within four years.
如果所有这一切都按计划进行，谢诺伊期待植入物在四年内能用在实验室动物身上。
Within four years, she has managed to become so fluent in English that she doesn't even have a foreign accent!
在短短四年的时间里，她能说一口流利的英语，而且不带外国口音！
The old-fashioned wallet will be obsolete in the US within four years, an electronic payments company has claimed.
某电子支付公司称，传统的钱包四年内将会在美国过时。
A leading credit agency warned yesterday that the Treasury's plan to halve the deficit within four years was too slow.
昨日，一个信用机构龙头提醒，在四年内将亏损减半的财政计划速度过慢。
Mr Obama vows to halve it within four years, but that will still leave it bigger than the deficits for which he once lashed Mr Bush.
奥巴马承诺四年内赤字减半，但是即使减半赤字依然高于他所批评的布什时期。
And he says his team has already identified two trillion dollars in reductions to help cut the deficit in half within four years.
另外，他还说，其团队已经找到了减少2万亿美元(的领域)，以便在四年之内将赤字减半。
Rosendahl is confident that a commercial model of "Deep Green" will be available within four years but he says obstacles still remain.
Rosendahl对4年内这种“深海绿色能源”能够投入商用充满信心，但同时他也表示依然需要面对不少困难。
Upon promotion to chief banking officer in 1997, Wilcox moved from Massachusetts to California and became President and CEO within four years.
他于1997年被提升为首席银行官，之后从马萨诸塞州移居加利福尼亚州，并在四年内上任为硅谷银行金融集团总裁兼首席执行官。
The country's first bullet train only started running in 2007 but within four years China had developed the world's largest high-speed network.
中国的首列动车是在2007年才开始运行的，但短短4年内，中国就建设起了全球规模最大的高铁网络。
And next year at our nuclear Security Summit, we will advance our goal of securing all the world's vulnerable nuclear materials within four years.
在明年核安全峰会上我们将推动的目标是，在4年之内使全世界所有处境危险的核材料得到妥善管理。
Some of the more reclusive creatures managed to hide from sight for 80 years only to reappear within four years of being officially named extinct in the wild.
有些行踪更隐秘的生物在消失了80年后被官方宣告已在野外绝种，而在宣告后不到四年，它们又再次现身。
And we agreed to increase cooperation on nuclear security, which is essential to achieving the goal of securing all vulnerable nuclear material within four years.
我们同意加强在核安全问题上的合作，这对于达到在四年内保障所有危险核材料的安全的目标至关重要。
(Applause.) And next year at our nuclear Security Summit, we will advance our goal of securing all the world's vulnerable nuclear materials within four years.
(掌声)在明年核安全峰会(Nuclear Security Summit)上我们将推动的目标是，在4年之内使全世界所有处境危险的核材料得到妥善管理。
And so is this point from Arne Duncan, the secretary of education: "Currently about one-fourth of ninth graders fail to graduate high school within four years."
教育秘书长阿恩邓肯也这样认为，他说：“现在有四分之一左右的学生用四年时间却不能从高中毕业。”
However, due to the lack of media coverage, the general public knows about the Beijing Men's Team winning the championship for three years within four years time;
但是由于媒体关注度比较低，大家都知道北京男篮四年三冠，却很少人知道北京女篮也是一支优秀的冠军队伍。
The bill requires all companies listed on the Paris stock exchange to gradually implement changes that put women in 20 percent of their board seats within 18 months, and 40 percent within four years.
该法案要求，在未来18个月内，巴黎证交所名单上的所有公司董事会成员中女性比例达到20%，4年内将该比例提升至40%。
Although Henry quickly learned the ropes of his new job so quickly that within four years he was chief engineer at the Detroit power plant - his interest in fuel engines had come to dominate his life.
尽管亨利很快就学会了新工作中的各种技能。使得他不出四年他便成为底特律电厂的总工程师，然而他对燃油发动机的兴趣在其生活中占据着主要地位。
Others are pruning before the markets exert real pressure: Britain's debt has the longest maturity of any EU member but it is still aiming to get its finances in order within four brutal years.
其它国家正在精简开支，等候市场施加真正的压力：尽管英国债务的还期在欧盟成员国中是最长的，但是该国仍然计划度过严酷的四年，使本国财政在四年内恢复秩序。
Opec has revised its 2025 oil forecast down by 12% within the past four years.
欧佩克最近四年来将其2025年预计石油产量下调了12%。
Both meticulously kept within the limits for deficits and debts set down by the stability and growth pact-unlike Germany, which flouted the rules for four years from 2003 (and avoided punishment).
二者都小心地将赤字控制在限度之内，并且都根据稳定与增长协议偿还债务——不像德国，自2003年以来，四年都将条约置之不理(并且也逃避了惩罚)。
More than a dozen luxury hotels, including the first Four Seasons to be built in any of the former Soviet republics, are scheduled to open within the next two years throughout the city.
城里还正在建造十几座豪华酒店，包括准备在前苏联每个共和国开业的四季酒店，这里是开出的第一家。
But foreign know-how is key to its plans to boost oil output to four million barrels a day within four to five years, from 2.4 million barrels currently.
但是，外国的先进技术对于伊拉克在四、五年内将日产量从目前的240万桶提高到400万桶的计划非常关键。
But foreign know-how is key to its plans to boost oil output to four million barrels a day within four to five years, from 2.4 million barrels currently.
但是，外国的先进技术对于伊拉克在四、五年内将日产量从目前的240万桶提高到400万桶的计划非常关键。
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