为什么咸水鱼在淡水中过的不舒服。
古时候的鲨鱼在淡水中生活？
这是导致咸水鱼，在淡水中死亡的原因，对吗？
This is what drives the death of saltwater fish in fresh water, right?
在淡水中的极地附近。
我常举的一个例子是：大马哈鱼在淡水中时由内政部负责，而在咸水中时则由商业部负责。
Then there's my favorite example: the Interior Department is in charge of salmon while they're in fresh water, but the Commerce Department handles them in when they're in saltwater.
小龙虾在淡水中收获，例如路易斯安那州的这片稻田。小龙虾是这里的主要产品，但是季节性很强。
Crawfish is harvested in fresh water, like in this Louisiana rice field. It's a staple - but a seasonal one.
由于很多淡水水体体积很小，所以生物成分在淡水中对生态系统的影响通常要比在海水或土壤中对生态系统的影响大。
The influence of the biological component on ecosystem is often greater in fresh waters than in marine or terrestrial systems, because of the small size of many freshwater bodies.
“尽管陆地上的植物在吸收着温室气体，一些气体还是被从淡水中给释放出来” “戴维说。”
"While the vegetation on land is taking up greenhouse gases, some of them are being released back from freshwater," Bastviken said.
在剩下的2.5%的淡水中，大约有69%是未融化的冰川和冰河。
Of the remaining 2.5 percent that is fresh water, about 69 percent is frozen in ice caps and glaciers.
在水中，淡水螺中释放出的尾蚴侵入人体皮肤，造成感染。
Larval forms of the parasites, which are released by freshwater snails, penetrate the skin of people in the water.
OLKHON是世界上最大的淡水中的岛屿，并且是在贝加尔湖唯一有人居住的最大的岛屿。
Olkhon is one of the largest fresh-water islands in the world, and the largest and only inhabited one on Lake Baikal.
Gymnobot的设计灵感来自于一种名为宝刀鱼(knifefish)的淡水鱼，这种鱼利用腹部长长的鱼鳍，在水中可以进退自如，还可以作出水中盘旋等动作。
The design is a nod to freshwater knifefish, which can move forward and backward, and hover, by rippling an elongated ventral fin.
这个模拟器证明当淡水和海水混合时，浓度会一直扩散，直到在液体中盐分完全均等。 如果在淡水和海水中放置一张选择膜，就可以控制扩散程度、获得潜在能量。
The simulator proves that when sweet and salt water join, the concentration will diffuse until the salinity is equal in the total fluid.
鳉鱼属于鳉科的许多种小型鱼，包括虹鳉和蚊鱼，主要栖居在温暖地带的淡水和咸水中。
Any of numerous small fishes of the family Cyprinodontidae, including the guppy and mosquito fish, inhabiting chiefly fresh and brackish waters in warm regions.
鱼属于？科的许多种小型鱼，包括虹？和蚊鱼，主要栖居在温暖地带的淡水和咸水中。
Any of numerous small fishes of the family Cyprinodontidae, including the guppy and mosquito fish, inhabiting chiefly fresh and brackish waters in warm regions.
虽然作为淡水鱼类，三文鱼大部分时间都生活在海洋里，它们只在产卵期间回到淡水中，这种生活习性被称为溯河产卵。
Salmon spawn in fresh water, but in many cases, the fish spend most of their lives at sea, returning to the rivers only to reproduce. This lifecycle is described as anadromous.
利用恒电流试验测试了工业纯铁和35钢在海水和淡水中的牺牲阳极性能，利用电流阶跃阳极极化法测试了二者在海水和淡水中的极化性能。
In seawater and fresh water, the performance of ingot and 35 steel was measured by constant current experiment, and then their anodic polarization curves were drawn.
如果腕表在海水中使用，离开海水后请用淡水冲洗，并用干布擦净。
If the watch is used in seawater, rinse with fresh water afterward and wipe with a dry cloth.
只要有充足的阳光和二氧化碳，海藻就可以在淡水或海水中生长。
Thriving on sunlight and CO2, algae can be grown in fresh or brackish water.
此技术探测器还具有防水功能，在淡水和海水中的防水深度能达到10英尺，并可以提供多种功能去帮助从各种杂乱目标中识别和分离出预定目标。
Waterproof to a depth of 10 feet in fresh and saltwater environments, the detector offers multiple features to help identify and separate desired targets from trash targets.
此技术探测器还具有防水功能，在淡水和海水中的防水深度能达到10英尺，并可以提供多种功能去帮助从各种杂乱目标中识别和分离出预定目标。
Waterproof to a depth of 10 feet in fresh and saltwater environments, the detector offers multiple features to help identify and separate desired targets from trash targets.
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