水域

According to the monitoring data from the coast fisheries ecological environment of Guangxi during 2001~2004 years,the analysis,research and assessment were done to the Dugong national-level nature reserve of Hepu in Guangxi sea area,including the environmental quality changes,the composite index geographic distribution and the annual border change characteristics.

根据2001~2004年广西沿海渔业生态环境调查监测数据，对广西合浦儒艮国家级自然保护区水域海水环境质量变迁、综合指数地理分布及年际变化特点进行了较全面的分析研究与评价。

To control and harness the pollution of dustfall in Changchun city, we should base on the construction of the ecological city, we also should enforce afforestation construction and water construction, and then we could achieve social, economic and environmentally sustainable development.

对长春市大气降尘污染进行治理和控制，应该首先以城市生态建设为基础，加强绿化建设和水域建设，实现社会、经济和环境的可持续发展。

Neighbor-Joining analyses of teleost hepcidins showed that the eelpout 4cys variant arose independently from the notothenioid version, which lends support to adaptive evolution of reduced cysteine hepcidin variants on cold selection. The NJ tree also showed taxonomic-specific expansions of hepcidin variants, indicating that duplication and diversification of hepcidin genes play important roles in evolutionary response to diverse ecological conditions.

另外我们在另一种生活于南极水域的eelpout中也发现了一种含有4个半胱氨酸残基的hepcidin，而eelpout和南极鱼notothenioid在分类学上分属于不同亚目，是一类相差较远的物种，利用Neighbor-Joining方法建树分析发现eelpout的hepcidin虽然同样仅含有4个半胱氨酸残基，但和notothenioid的4cys_hepcidin有着不同的起源，这也进一步说明了hepcidin中半胱氨酸残基数目的减少确实是对寒冷环境的一种适应性进化。

The waters they sought to protect, says Lehr, were "an El Dorado for fishing fleets of many nations."

"他们寻求水域保护，莱尔说，是埃尔多拉多等许多国家的捕鱼船队。"

You'll want to destroy them before crossing the electrified water.

你会在越过通电水域之后消灭他们。

But the waters here are home to the elephant seal.

但这里的水域住着象海豹。

The environmental factors of plain river network region in Southern China are fit for the growth of Elodea nuttallii, selecting it as a species of submerged plant to restore the regional ecology is very appropriate.

华南河网地区的环境因子基本处于伊乐藻适宜的生长范围之内，选择其作为该地区受损水域生态修复的沉水植物是比较合适的。

Concentrations of heavy metals in the suspended matter and sediment are not obviously affected by elutriation of stream and dilution of tributary stream. This feacture does not change even in the distant reach downstream. Therefore, the suspended matter and sediment are the potential source of heavy metal contamination to the waters for industry and agriculture use.

河流的地质、水文特征决定了河流悬浮物和沉积物成为河流中重金属搬运迁移的主要载体，在几十公里的下游水域中悬浮物和沉积物中重金属含量没有受到其它支流清澈水体的稀释，成为下游工、农业用水的潜在污染源。

These have either fled north to stay cool or been fished to the last elver before being turned into salmon feed.

这些鱼类不是逃往北方寒冷的水域，就是在长成为鲑鱼食物之前被捕捞到只剩下幼鳗。

At this time of year, the waters around the elvish island of Vori freeze.

一年里的这个时期，凡里岛的周围水域都结冰了。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。