河湖的

Neglecting the relations between water resources and the ecosystemis a fault of water resources management in the 20th century, which directly causes many questions: the degeneration of ecosystem, the demolishment of the habitat of the wild biology, the withering of the river and wetness, the degradation of the self cleaning of water bodies and so on.

忽视水资源与生态环境系统之间的关系是20世纪水资源管理的失误，直接导致生态环境的退化，引发森林退化、野生生物栖息地破坏、生物多样性减少、河湖湿地萎缩、河道断流、河川淤积、水体自净能力降低、水环境恶化和地下水位下降等诸多问题。

The freshwater ichthyofaunas mainly from northern China are characterized by primitive actinopterygians,and they are closest to those from Siberia and Middle Asia,and also contain some forms similar to the fishes from other regions of Laurasia and the Gondwanan continents.

与当时"南海北陆"的古地理格局一致，淡水鱼类主要分布于北方大陆的河湖相盆地，但也见于扬子板块与北方大陆碰撞后的四川盆地；海生鱼类则主要分布于华南和喜马拉雅地区。

To this end, we quantified the total body energy content and energy density of economically and ecologically important young (age-0 1) nonnative alewives Alosa pseudoharengus collected during 1998 2003 in eastern Lake Michigan and Muskegon Lake, a connected drowned river mouth lake.

为了这个目的，我们从经济学和生态学角度，测量了（0-1）龄的非本土灰西鲱幼鱼的总能量和能量密度，这些样品与1998～2003年采集于密歇根东部湖区和马斯基根湖的河口区。

Any of several freshwater bivalve mollusks of the genera Anodonta and Unio, found in the central United States, that burrow in the sand or mud of lakes and streams.

淡水蚌发现于美国中部的无齿贝属和珠蚌属几种淡水双壳软体动物的一种，在湖和河中的沙中或泥中挖洞

Indeed, the Grand Canal was constructed partly utilizing the pre-existing channels connecting these lowland swamps and lakes (3) Several rivers have produced deltaic forms on the western side of the lakes;(4) A series of artificial islands have been constructed upon the natural bars or barriers located in the lakes and wetlands, and are locally termed Duo, Dun or Wei (meaning artificial bars or crossways in Chinese).

钻孔B/M界线之下(4078 m～4530 m)的泛滥平原河湖相沉积物中局部地段富含铁锰鲕粒，其主要矿物组成为蛋白石、铁的氢氧化物(包括纤铁矿、水纤铁矿、针铁矿、水针铁矿，统称褐铁矿)、铁锰氧化物(包括硬锰矿和软锰矿，以硬锰矿为主)及极少量的细小碎屑矿物(钾长石、蚀变黑云母、含铁白云母、锆石、独居石、金红石和含钛磁铁矿)。

Protecting fertilizer and preventing pollution Making the leakage losses of soil nutrients reduce more than 85%, improving the utilization efficiency of fertilizers; reducing the pesticide content in the runoff, preventing the pollution of groundwater and river and lake water.

保肥防污染，使土壤养分的渗漏损失减少95%以上，提高肥料的利用率；降低泾水中的农药含量，防止地下水和河湖水体污染。

On the other hand,the means have no apparent influences on soil and the growth of reed,furthermore,it provides suitable water and fertilizer to reed and promote reed to grow.

芦苇是一种水生维管束植物，它广泛生长在我国南北方的河湖岸边，产量高，用途广，它不仅是优良的草类制浆造纸原料，还广泛应用于农业和建筑业中，在我国国民经济中起着重要的作用。

It also suggested that the climate and environment in the area are characterized by changeability, sensitivity, instability, its general changes are the positive process of desertification correspondingly to the dry-cold steppe or desert steppe and desert, while the reverse process correspondingly to warm semi-humid forest steppe and temperate-humid shrub steppe.

进一步证实了古土壤S〓发育和河湖相沉积的萨拉乌苏组堆积时为温暖半湿润的森林或森林草原环境，全新世的砂质古土壤或湖沼相沉积时为温湿灌丛草原或疏林草原环境，黄土沉积时为半干旱干草原环境，风成砂沉积时为干旱荒漠草原甚至荒漠环境。

And China is also making more use of the Ili river, which ends up in Kazakhstan's Lake Balkhash, a vast, shallow expanse.

中国也越来越多地利用最终汇入哈萨克斯坦的巴尔喀什湖的伊犁河。

The Niagara consists of two parts: the Horseshoe Falls on the Canadian side of the river, and the American Falls on the United States' side.

尼亚加拉河是连接伊利湖和安大略湖的一条水道，湖水经过河床绝壁上的山羊岛，分隔成两部分，分别流入美国和加拿大，形成大小两个瀑布，小瀑布称为美国瀑布，在美国境内，高达55米，瀑布的岸长度328米。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。