淡水生物

Because nitrogen oxides were already present on early Earth, our finding opens up the possibility that oxygen was available to microbial metabolism before the evolution of oxygenic photosynthesis.

同时，由于亚硝酸盐通过化肥的使用而在淡水农业土壤中大量存在，新的研究结果也可为肥料在甲烷循环中的利用提供契机。生物谷 Bioon.com

From the still depths of Lake Malawi to the powerful rushing waters of Victoria Falls, freshwater is Africa's lifeblood, sustaining some of the most resplendent and dramatic gatherings of wildlife; Crowds of spoonbills and black herons corralling fish on the Bangweulu floodplains, giants crocodiles digging ambush for unsuspecting buffalo on the Luangwa River and millions of flamingoes gathered on the caustic soda lakes of East Africa's Rift Vally.

从深遽平静的马拉威湖到滚滚而下的维多利亚瀑布，淡水是非洲的生命之源，养育不少活泼灿烂的野生生物。在班乌拉涝原，琵鹭与黑鹭围捕鱼群。在卢安瓜河，巨鳄伏击没有疑心的水牛。在东非大裂谷，数百万只红鹳在具腐蚀性的钠湖聚集。

Case-study from Silurian sandstones in the Central Tarim show that quartz has kept overgrowing secondarily when oil saturation was decreased by meteoric water flushing subsequently to hydrocarbon emplacement.

同时，油气侵位是否有利于次生孔隙的发育，也值得研究。塔中地区志留系实例研究显示，烃类侵位后可因淡水注入而被氧化和生物降解，所产生的酸性环境有利于矿物的溶解。

Scuds are simply freshwater shrimps, they are omnivores feeding on smaller creatures and vegetation alike.

飞毛腿简直淡水虾，他们omnivores取食微小生物和植物一样。

Yet it is vital to the survival of humans and a wide range of critters from dragonflies and piranhas to beavers and bullfrogs.

然而淡水对于人类，还有大量的生物，不管是蜻蜓和水虎鱼还是海狸和牛蛙，他们的生存是非常重要的

It amounts to precious little water, less than half a percent of the world's water supply. Yet it is vital to the survival of humans and a wide range of critters from dragonflies and piranhas to beavers and bullfrogs.

淡水是极其珍贵又稀少的资源，占世界储水总量不到0.5%，但是对人类和大部分生物而言，却是至关重要的，比如从蜻蜓和水虎鱼到海狸和牛蛙等。

The company also developed products which are specially designed for fish transportation, Arowarna special treatment, Marine fish special treatment and Koi carp, Gold fish special treatment.

目前推出的产品有杀虫、消毒灭菌、生物水质处理、水草护理、免疫促长等五大系列，广泛应用於各种海淡水观赏鱼品种，还特别推出适合观赏鱼养殖场日常护理专用、打包运输专用、海水专用、龙鱼专用、金鱼专用、锦鲤专用、七彩专用等专业系列产品，产品销往世界各地深受观赏鱼爱好者的青睐，已成为国际观赏鱼药品原料和 OEM 服务的主要供应商。

This mixing of fresh and salt water creates a unique environment filled with life of all kinds—a transition zone between the land and sea.

盐水和淡水混合创造出了一个独特的环境，其中充满了各种生物——这是陆地和海洋的过渡区

This mixing of fresh and salt water creates a unique environment filled with life of all kinds—a transition zone between the land and sea.

淡水和盐水混合创造出一个独特的环境，其中充满各种生物。这是个陆地和海洋的过渡区。

Protists occur in freshwater, saltwater, soil, and as symbionts within other organisms.

单细胞生物发生在淡水，盐水，土壤和作为在其他有机体之内的symbionts。

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。