如今的绿藻大多生活在淡水水域中，这一点说明它们的早期进化史可能起源于淡水生境。
Today green algae live mainly in freshwater, suggesting that their early evolutionary history may have occurred in freshwater habitats.
与海洋生境不同的是，淡水生境的环境条件变化很大。
The environmental conditions of freshwater habitats, unlike those of ocean habitats, are highly variable.
红树林的树木为鱼类提供了自然的咸淡水生境，但是这些年来在亚齐却恰恰为了修建鱼塘而将红树林砍掉。
Mangrove trees provide a naturally brackish habitat for fish, but much of Aceh's mangroves have been cut down over the years, precisely to build fishponds.
他认为观察到的这些昆虫捕食爬行动物的现象引发了对之前所持对淡水生境中捕食动态观点的疑问。
He suggests that these observations of bugs predating reptiles call into question previously held opinions about predator-prey dynamics in freshwater habitats.
戈斯以水蚤（Daphniamagna）——一种微小的淡水甲壳类昆虫——为研究对象。 该类昆虫过去常被用于各类水生生物毒性研究中。
Goss studied Daphnia magna, a tiny freshwater crustacean used in many aquatic toxicity studies.
网站描述：这是一个具有大量高质量的海水和淡水生物信息的网站。
Description: This is website contains large quantity information on Marine organisms and fresh-water organisms information.
所有这些淡水生态系统可以在一个分水岭中被发现—那是一套可以把比如大湖泊或者海洋这样单一的水域排干的栖息地。
All the freshwater ecosystems can be found within a watershed-a set of habitats that drain into a single body of water such as a big lake or the ocean.
为满足对水质变化进行实时监测的要求，设计了淡水生物监测仪。
A freshwater biomonitor system is designed to perform in situ monitoring of the organism behaviors in freshwater.
目前，对氨氧化原核生物的研究大多集中在海洋、土壤等环境，而对淡水生境的研究较少。
Up to the present day, compared to freshwater lakes, more attention was paid to the ammonia-oxidizing prokaryotes in Marine and soil environments.
水产专业的学生将学习鱼类，软体动物和其他淡水生物的养殖知识。
Students of aquaculture learn to cultivate fish, mollusks, and other foods that may be raised in fresh water or salt water.
海味：可食用的水产动物，既包括海水生物也包括淡水生物，但哺乳动物除外。
Seafood: Edible aquatic animals excluding mammals, But including Both freshwater and ocean creatures.
水产养殖专业的研究集中如何对淡水和海水的水产品(包括鱼类，贝类及水生植物等)进行育种，养殖，捕捞及销售。
Aquaculture studies concentrate on the selection. culture. propagation. harvest and marketing of domesticated fish. shellfish and Marine plants. both freshwater and saltwater.
与合作伙伴共同努力，恢复了17个湖泊与长江的连通，令长江中游的淡水生态系统重现生机。
WWF and our partners have facilitated the reconnection of 17 lakes to the Yangtze River, infusing new life to its fragile freshwater ecosystem.
水，乃生活之本。在这个星球上，只有极少的一部分水——占不足全部水体的百分之一——服务于近70亿的人口以及无数的淡水水生态系统。
Water is the basis of life, and on this planet only a tiny share—less than one percent of all water—is available for nearly 7 billion people and a myriad of freshwater aquatic ecosystems.
本发明的装置充分利用了发电厂的废热，降低了由海水生产淡水的成本，也减少了对环境的热污染。
Said invention fully utilizes the waste heat of electric power plant so as to reduce cost for producing fresh water hy using sea-water and reduce thermal pollution to environment.
网站提供了该系统的淡水水生和湿地植物、陆地和水生侵入性植物文献数据库的免费检索服务。
The APIRS bibliographic database is a free online resource devoted to freshwater aquatic and wetland plants, as well as terrestrial and aquatic invasive plants.
北美淡水蟹是在1970年代引入英国，已经在此安家。由于其掠夺性对本地的水生植物、水生无脊椎动物和鱼类造成了危险。
The North American signal crayfish (Pacifastacus leniusculus) is one of several species introduced into the UK for aquaculture in the 1970s, and which have since made themselves right at home.
北美淡水蟹是在1970年代引入英国，已经在此安家。由于其掠夺性对本地的水生植物、水生无脊椎动物和鱼类造成了危险。
The North American signal crayfish (Pacifastacus leniusculus) is one of several species introduced into the UK for aquaculture in the 1970s, and which have since made themselves right at home.
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