查询词典 freshwater

A primitive , bony freshwater fish Amia calva of central and eastern North America , with a long , spineless dorsal .

弓鱼北美洲中部和东部一种原始，多骨淡水鱼，具有长脊背

Hainan Island's freshwater fish (not including Anadromous Fish of) 15 Section 57 is 72 is.

海南岛的淡水鱼有15科57属72种。

Established in 1985, the original mission of the center was to study the impacts of nonindigenous species in the U.S., to restore imperiled freshwater and estuarine species, and restore anadromous fish populations.

该中心始建于1985年，其最初的任务是研究非本土鱼类在美国的影响，恢复受到威胁的淡水和河口物种，恢复溯河性鱼类种群。

Any of various freshwater or anadromous food and game fishes of the family Salmonidae, especially of the genera Salmo and Salvelinus, usually having a streamlined, speckled body with small scales.

鳟鲑鱼科的各种淡水或溯河性食用及捕钓鱼，尤指鲑鱼属和红点鲑属，通常身体呈流线形，有斑纹，鳞片等

Any of various freshwater or anadromous food and game fishes of the family Salmonidae,especially of the genera Salmo and Salvelinus,usually having a streamlined ,speckled body with small scales.

鳟□鱼科的各种淡水或溯河性食用及捕钓鱼，尤指□鱼属和红点□属，通常身体呈流线形，有斑纹，鳞片等

Any of various primitive elongated freshwater or anadromous fishes of the family Petromyzontidae, characteristically having a jawless sucking mouth with rasping teeth.

七鳃鳗，八目鳗一种七鳃鳗科的原始细长淡水或溯河产卵鱼，特点是长有无颌的吮吸嘴，嘴内有锉牙

Type genus of the Anatidae: freshwater ducks.

鸭科的模式属；淡水鸭。

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

Base on content of chlorophyll a and feeding type of fish and shellfish a food web methods was designed to control eutrophilication. The native freshwater bivalve,Anodonta woodiana, was selected as a filter to remove the algae in the water. The result is quite satisfied and promising.

本研究以水中叶绿素a浓度为基础，鱼类食性为辅，发现使用本土种且具有经济价值之淡水圆蚌，来作为滤除水中藻类的生态方法颇具可行性，利用藻类吸收营养盐、圆蚌食用藻类、再将圆蚌移除之方式而达到降低水库营养盐能量的目的。

Fairy shrimp:any of various transparent freshwater crustaceans of the order anostraca that lack a carapace and characteristically swim upside-down.

&仙虾：透明的淡水鳃足类的任何一种，无甲壳并且倒置游动。&

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。