A study of pollen lifted from holes drilled at the bottom of African lakes shows that the African landscape has been in a state of flux for the past several million years.
研究从非洲湖底的钻孔里冒出的花粉，发现非洲景观在过去几百万年中一直处于变化的状态。
Since November 2009, when traces of the fish were found near Chicago, federal and state officials have used nets, electric shocks and poison to keep them out of the Great Lakes.
年11 月，在芝加哥附近发现了掠食性鱼种，联邦和州官员使用捕鱼网，电击和投毒等方式，希望能把这些鱼类从五大湖区剔除掉。
Another state oil company has created lakes of spilled crude in Sudan.
另一家中字头石油公司在苏丹发生原油泄漏事故，泄漏的原油形成了多个湖泊。
In the 1990s federal and state regulators agreed to make state limits more uniform for the Great Lakes' most toxic pollutants; Congress is now considering a bill to promote further collaboration.
90年代联邦和州级管理部门同意由各州尽可能统一限制五大湖最具毒性的污染源；国会现正讨论一项促进各州进一步合作的提案。
A report in 2003 counted 148 federal and 51 state programmes to restore the lakes.
2003年的一份报告称，有148个联邦项目和51个州项目旨在湖区恢复。
There are no natural lakes in the state of Ohio, every one is manmade.
在俄亥俄州内没有天然湖泊，每一个都是人造湖。
And eutrophic state of five major lakes in our country were studied with more satisfactory result compared with other methods.
并研究了我国五个主要湖泊的富营养化状况，和其它方法比较，取得了满意的结果。
A large portion of the northern quarters of the state are studded with lakes interconnected by networks of creeks and streams.
该州北部大部分地区分布着被河流和小溪链接的湖泊。
The creature has been found in lakes and other waterways across the state.
这种生物已经在该州各地的湖泊和水域中被发现。
Those reclaimed lakes should be put in order according to the standards set by the state for flood control and restored from farmland in a planned way.
据介绍，包括广州在内，珠江流域的整体防洪能力距离国家防洪标准还有一定距离。
The awful truth dawned only after a second opinion, by Zak Pretorius of the University of the Free State in South Africa: stem rust had not only lived on in a remote corner of Africa's Great Lakes.
这一可怕的事实最终被南非自由州大学的ZakPretorius的一个提议所证明——茎锈病不仅仅存活于非洲大湖区的偏远角落，他已经进化并击败了曾经不败的Sr31。
The awful truth dawned only after a second opinion, by Zak Pretorius of the University of the Free State in South Africa: stem rust had not only lived on in a remote corner of Africa's Great Lakes.
这一可怕的事实最终被南非自由州大学的ZakPretorius的一个提议所证明——茎锈病不仅仅存活于非洲大湖区的偏远角落，他已经进化并击败了曾经不败的Sr31。
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