These characteristics make spartina a valuable component of the estuaries where it occurs naturally.
这些特点使自然生长的米草成为河口的宝贵组成部分。
And a lot of fish is caught in estuaries.
大量的鱼在入海口被捕捞。
Or a lot of fish are caught in estuaries .
不幸的是，这种功能使河口对环境污染非常敏感。
And a lot of fish are caught in estuaries.
很多鱼也是在河口捕获的。
They may also enter estuaries and mangroves in search of prey.
他们也可输入猎物寻找的红树林，河口。
Nutrients arrive in estuaries from both the land and the ocean.
从陆地和海洋来的营养成分到达入海口。
With fisheries and estuaries closed, they cannot easily find other jobs.
但随着渔场和和河口场的关闭，他们很难找到其他工作。
Estuaries also contribute to the economy through tourism and fishing.
河口还通过旅游业和渔业对经济作出贡献。
Finally, estuaries provide both recreation and education for human beings.
最后，河口为人类提供娱乐和教育。
The answer was to block certain estuaries leading to Antwerp and Rotterdam.
答案是阻塞一些特定的通往安特卫普和鹿特丹的河口。
Now, many of their estuaries and coastal seas are suffering the same malady.
但是现在，那里的许多河口和沿海地区却出现了同样的问题。
There are always wide tidal flats in most estuaries, especially in Qiantang Estuary.
大多数河口特别是钱塘江河口，往往存在宽广的潮滩地。
In general, female eels are found upstream in river systems, while males stay in the estuaries.
一般而言，我们能在上游水系找到雌性鳗鱼，而雄性鳗鱼则呆在河口。
“Some of the estuaries fishes were retrieved from what are now parking lots,” Hastings said.
“有些地方甚至变成了停车场，某些河口鱼类的标本算是被抢救性的发掘了出来，”黑斯廷斯说。
Unfortunately, this function also makes estuaries very sensitive to environmental pollution.
不幸的是，这种功能使河口对环境污染非常敏感。
“Some of the estuaries fishes were retrieved from what are now parking lots, ” Hastings said.
“有些地方甚至变成了停车场，某些河口鱼类的标本算是被抢救性的发掘了出来，”黑斯廷斯说。
Unfortunately, , this function also makes estuaries very sensitive to enviro-mental pollution.
不幸的是， 髧这个作用也使河口对环境污染很敏感。
This is the website of Estuaries Journal, which is published by Estuarine Research Federation.
这是《河口》杂志的网站，由河口研究联盟出版。
Areas like this, where freshwater meets the ocean, create dazzlingly diverse ecosystems called estuaries.
在这样的地区里，淡水湖与海洋相遇，创建了一个名为河口的多种多样、光辉灿烂的生态系统。
They haunt shallow waters like bays and estuaries worldwide-and some species even ascend freshwater rivers.
它们常出没于像海湾的浅水水域，世界上的海口处，有些种类甚至追溯到内河中。
They need big grassy estuaries, subalpine habitat, and an enormous home range, which those islands don't offer.
它们需要找长满青草的大河口地区和半山坡作为栖息地，而且还要有比较大的活动区域才行，而这些条件是那些小岛都不具备的。
Water could surge over levies and flood estuaries, where organisms depend on a careful balance between salt and freshwater.
汹涌的海水可能会漫过堤岸（原文levies 似有误，估计是levees）和泄洪河口，那里的海水和淡水间保持着细微的平衡，是有机生物体赖以生存之处。
To research the environmental problems of estuaries and coastal seas, we must learn the tidal flow field in detail firstly.
所以在近海工程及环境问题的研究中，必须首先要对潮流场有一个详细的了解。
Since estuaries protect animals and plants from storms and folds and prevent erosion, protecting estuaries is very important.
既然河口保护动植物免受风暴和洪水的影响，而且还可以防腐蚀，保护河口就非常重要。
Density currents generated by saline and fresh water interactions are also important in the transport of sediment in estuaries.
由盐水和淡水相互作用所产生的异重流，在河口泥沙输移中也是很重要的。
Density currents generated by saline and fresh water interactions are also important in the transport of sediment in estuaries.
由盐水和淡水相互作用所产生的异重流，在河口泥沙输移中也是很重要的。
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