淡水

Found in still or slow-moving fresh or brackish water; useful oxygenator for cool water ponds and aquaria.

生长于静止的或缓慢流动的淡水或微咸的淡水中；对于冷水池塘和养鱼缸来说是一种有用的充氧器。

The former began to migrate toward fresh water environment in late Cretaceous,but portion of them still remained in sea water till late Eocene;the latter began to migrate toward fresh water in Paleocene and lost its records in sea water.

前者在晚白垩世开始向淡水环境迁移，但仍有部分留在海水中，一直延续到晚始新世；后者在古新世时开始迁向淡水，并在海水中失去记录。

Finally, the model was used to investigate the characteristics of hydrodynamic and salinity distributions in the Houlong River estuary. The estuary exhibits the mixed of progressive wave and standing wave.

模式亦模拟不同上游淡水流量时，盐分入侵距离，再经由线性回归建立不同淡水流量与盐分入侵距离之关系。

Sold as a natural freshwater pearls cultured pearls; shell carving, material for the natural freshwater / sea shells; fittings and shellfish shell handicrafts, stone carving shadow carving, pearl jewelry, according to customer demand for design, proofing, and processing services.

所售珍珠为天然淡水养殖珍珠；贝壳雕刻，材质为天然淡水／海水贝壳；贝壳配件和贝壳工艺品，石雕影雕，珍珠首饰，可按客户需求，提供设计，打样，加工服务。

The development of crayfish culture in China is analyzed and it has a bright prospect to develop the industry of crayfish culture especially soft-shell crayfish production in China.

我国淡水螯虾分布广泛，产量巨大，而且其生产成本较低，在我国开展淡水螯虾的养殖尤其是软壳螯虾生产具有广阔的前景。

Through the lab study on Pb2+ in water adsorbed by green algae in fresh water,such as stigeoclonium,cladophora and spirogyra,it opens out the adsorbing relationship between green algae and Pb2+ and the main influence factors.

通过淡水中绿藻门的一些丝状种类，如毛枝藻、刚毛藻、水绵对铅的吸附实验，研究淡水藻类与铅的吸附关系及影响因素。

It has been discussed that the formation mechanism of subaqueous delta out of river mouth,the evolution of the Changjiang estuary,the diffusion of fresh water of the Changjiang outside the river mouth and its effect on the vicinity of sea waters,the properties of tidal action,as well as the wave regime in the estuarine region and the processes of fresh-salt water mixing.

河口是一个复杂的自然综合体。它既包括受潮汐影响的咸潮河段，也包括受淡水扩散影响的口外海滨，而盐淡水交会的混合地带则为这个综合体的主体部分。如果考虑到冰后期以来它的流路摆荡因素，则其影响的范围就可能更广。

Any of various small viviparous New World fishes of the family Poeciliidae , of fresh or brackish waters.

微小的圆锥状腹足动物，表面象帽贝但生活在淡水中并以淡水植物为食。

Small usually brightly-colored viviparous surface-feeding fishes of fresh or brackish warm waters; often used in mosquito control.

生活在淡水或半淡水水面通常体色鲜艳的小鱼；经常用于治蚊。

The scientists were studying a freshwater shrimp commonly found in England. Fishermen brought the shrimp to Northern Ireland in the 1950s as a tasty treat for local trout. Well, the shrimp liked the new digs. So much that they've all but eliminated the native shrimp species.

科学家们对一种英格兰常见的淡水虾进行了研究。20世纪50年代，渔民们把这些鳟鱼的美味佳肴带到了北爱尔兰，这些淡水虾倒是很乐意，不过土生土长的小虾可就大难临头了。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。