生长水中的

Fast growing plants, such as hornwort and waterweed are excellent oxygen providers and remove algae-promoting nitrate from the water.

生长快速的植物，例如金鱼藻（Ceratophyllum demersum和伊乐草是极好的供氧者，并能清除水中促进藻类生长的硝酸盐。

Now there is nothing but blue-joint and sedge and cut-grass there, standing in water all the year round.

以前这儿长着白色的忍冬和三叶草，现在只有经年生长在水中的加拿大拂子茅，莎草和 cut-grass，也只有在夏季穿过这片地时才不湿鞋。

The solubility～temperture curve of rubidium hydrogen selenate in aqueous was measured,and the bulk crystal of rubidium hydrogen selenate was grown by solution temperature reduction method after some unfavorable factors such as floating crystals and climbing crystals et al.

本文测定了硒酸氢铷在水中的溶解度～温度曲线，并采用溶液降温法，克服了RHSe晶体生长时易漂晶、爬晶等不利因素，生长出大尺寸硒酸氢铷单晶。

Eliminating or degrading phenolic contaminants in water was involved not only with the bioplastic and propagation of hydrephily biology but also with drinking safety of mankind and terraneous animals.

鉴于清除或降解水中的酚类污染物，不仅涉及水生生物及陆生植物的生长繁殖，更涉及到人类及陆生动物的食品饮水安全，因此，研究含酚废水的高效处理技术，对保护环境具有极为重要的意义。

Dead leaves are colonized by aquatic hyphomycetes - tolerant of low temperatures so can grow during the winter and even under ice - make the dead leaves much more palatable and nutritious for the various detritivorous invertebrates which eat them

死叶被水中的丝孢菌定殖–耐低温因而可在冬天生长甚至在冰下生长–使死叶成为食粪类无脊椎动物的美食。

Some conclusions were drawn: Oenanthe javanica grew normally when TN and TP concentrations in raw water were 7.05-9.99 mg/L and 0.29-0.73 mg/L respectively; with the hydraulic load being 0.5 m^3/(m^2d), the removal rates of NH3-N, TP, and TN from heavily polluted river water by Oenanthe javanica floating bed were positively related to water temperature, and it inhibited the growth of algae stably; the mean removal rate of nutritive salt increased with the concentration of raw water.

研究结果表明，进水ρ和ρ分别为7.05~9.99mg/L和0.29~0.73mg/L，水芹菜能正常生长，在水力负荷为0.5立方公尺/的条件下，水芹菜浮床对重污染河水中的NH3-N，TP，TN的去除率与水温正相关，对藻类的抑制作用稳定；营养盐的去除负荷随原水质量浓度的增加而增大。

Lesson fourteen Saturday Night and Sunday Morning星期六的晚上和星期日上午 by Alan Sillitoe Text 14-1 He sat by the canal fishing on a Sunday morning in spring, at an elbow where alders dipped over the water like old men on their last legs, pushed by young sturdy oaks from behind.

在春天一个星期日的上午，他坐在运河边钓鱼，在他附近，赤杨树被后面生长着年轻茁壮的橡树向前推挤垂人水中，像垂死的老人一样。

Grass planted in symbiosis ecosystem of fish and grass could absorb the nutrition of the waste water which supplied a feasible condition of normal growth, and was the food of the fish, so it was an important meaning.

在鱼草共生系统中，种植的牧草可以吸收循环养殖系统水中的营养物，为鱼的正常生长提供一个适宜的环境，同时生产的饲草可以养鱼，因而具有重要意义。

Animals live either on the sea bed or in mid-water where they swim or float. Plants are only found in the sunlit zone where there is enough light for them to grow either anchored to the bottom or drifting in the water.

动物住在它们漂浮的海里或者水中植物只在有充足的供它们生长的光的植根于底部或者水中的被阳光照射的地带被发现。

Soil degradation includes a complicated process of structural degradation, a loss of soil-water capacity and soil infertility which in turn induces the deterioration of the retentions of soil water, nutrients dissolved in water and airs in soil voids, which directly inffluece the growth of plants and crops.

土壤退化是一个结构劣化、持水性能退化和肥力贫瘠化共同作用的复杂过程，其结果是土壤中水分、溶解于水中的养分及气体在土壤内部孔隙中的滞留状况恶化，直接影响了植物与农作物的生长。

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。