Low levels of straying are crucial, since the process provides a source of novel genes and a mechanism by which a location can be repopulated should the fish there disappear.
低水平的游离是至关重要的，因为这个过程提供了一种新基因的来源和一种机制，通过这种机制，如果该地鱼群消失，可以重新繁殖该种群。
Fish is also the world's most widely traded foodstuff and a key source of export earnings for many poorer countries.
鱼品也是世界上交易最广的食品，而且是许多较贫穷国家出口收入的一个主要来源。
Fish and seafood are an excellent source of Vitamin B12, Vitamin d, Magnesium and Omega 3 fatty acids.
鱼和海鲜是维生素b12、维生素d、镁和-3脂肪酸的一个很好的来源。
A: For billions of people in the world, fish is a major source of reliable protein and an essential part of their diets.
答：对于世界上几十亿人口来说，鱼是一种主要的蛋白质来源，也是食物中的重要一环。
Compared with all the other things you might eat, fish are an excellent source of protein.
与其它我们可食用的东西相比，鱼类是蛋白质的最佳来源。
But as social policy it was ingenious: in a single stroke the fish became a source of real, sustainable wealth rather than shaky sustenance.
但是作为社会政策来讲，此举却很有独创性：画龙点睛的一笔就把鱼从不可靠的谋生手段变成了一个真正的、可靠的财富来源。
Our fish farm supplies a new, reliable revenue source that will ultimately pay for the full-time groundskeeper we've hired.
而我们的渔场有新的可靠地收入源，它将最终支付我们所聘请的全职渔场管理员的薪资。
Time and time again, consumers are told that fish is a safe, healthy source of lean protein and fatty acids, but do the health benefits outweigh the toxin risk?
消费者被一次次的告知，鱼类是安全的，富含健康的瘦蛋白和脂肪酸，但是这些健康物质能够有中毒危险吗？
It's a mutual beneficial relationship in which the larger fish provides the cleaner fish with a food source and protection, and the cleaner keeps it free from parasites in return.
这是一种互利关系，大鱼为清洁鱼提供食物来源和保护，作为回报清洁鱼使其免于寄生虫侵扰。
Smith said that could be achieved by eating plenty of foods that are a good source of vitamin B12 such as milk and other dairy products, fish, meat and fortified breakfast cereals.
他指出，要实现这点，可以食用大量富含B12的食物，譬如牛奶等奶制品、鱼、肉和加强型的早餐谷物。
They lived near the sea and they relied on fish as a main source of food, that is, a food that came to them, so they didn't have to move around as land-roaming hunter-gatherers did.
他们当时居住在海边，所以主要就以捕鱼为生，所以就没必要像世界其他地区的陆地狩猪采集者一样到处奔波迁徙。
Fish oils provide an excellent source of omega 3 fatty acids.
鱼油是omega -3脂肪酸的一个极好的来源。
Fatty fish is the best dietary source of omega-3 fatty acids, though plants such as flax contain omega-3 fatty acids.
含脂肪较多的鱼是不饱和脂肪酸的最佳饮食来源，同时一些植物如亚麻中也含有不饱和脂肪酸。
Fish is an open source project created by Axel Liljencrantz and licensed under the GNU General Public license, version 2. As of this writing, the latest version of fish is 1.23.0.
fish是由Axel Liljencrantz创建的一个开放源码项目，采用的许可协议是GNUGeneralPublicLicense,version2。
Squalene is commercially extracted from fish oil, and in particular shark liver oil. Squalene used in pharmaceutical products and vaccines is purified from this source.
市售角鲨烯提取自鱼油—尤其是鲨鱼肝油，提纯后可用于药物制品和疫苗。
With all the talk about the health benefits of omega 3 fatty acids, fish oil supplements are gaining popularity as excellent source of these healthy fats.
随着omega-3脂肪酸对健康有益讨论的盛行，鱼油补充剂作为这些健康脂肪酸的极好的来源，正日益普及。
Unfortunately the human body is unable to obtain omega-3 fatty acids EPA and DHA directly through diet alone, making a fish oil supplement a much more reliable source.
可惜人类不能直接从日常的食物中获取奥米茄3脂肪酸、EPA和DHA，所以日常补充适当的高品质鱼油是非常可靠的资源。
It's important to have a good source of protein too, so try things like fish, chicken, eggs, cheese or beans.
蛋白质的摄取也同样重要，所以吃一些富含蛋白质的食物，如鱼肉、鸡肉、蛋、芝士或豆子。
Squirrel-Shaped Mandarin Fish is yellow-colored and squirrel-shaped, with a crispy skin and tender meat, all covered with a sweet and sour source.//After
“松鼠鲑鱼”色泽黄亮，形如松鼠，外皮脆而内肉嫩，汤汁酸甜适口。
'Diets were rich in fruits and vegetables, ' she said. 'Fish was the principal source of protein. People drank water. '
她说，当时人们的膳食中多蔬菜水果，鱼是蛋白质的基本摄入来源。水是人们的饮品。
Coral reef fish should be purchased from reputable and licensed seafood shops. Do not buy it when the source is doubtful.
应该在有牌照及有信誉的海鲜档购买珊瑚鱼及不要购买来历可疑的鱼。
In countries all over the world, fish is a big part of the culture and an important source of nutrition.
像你这样的人很多。在世界各国，鱼是文化的重要组成部分和营养的重要来源。
Defecation in bays, estuaries, or lagoons where fish or shellfish are caught should be greatly discouraged, since this may be a source of infection.
在海湾、河口或者泻湖等垂钓和采集贝类的地方排泄更加不能鼓励，因为这样可以形成污染源。
Preious studies suggest that Se protects against the toxicity of Hg, and that fish is an important source of both.
以往的研究表明硒可以抗汞毒性，而鱼类是二者的重要来源。
To study the influence of fermented culture mediums with different nitrogen sources on the growth of HD-1, nut cake and non-salt fish meal were chosed as the nitrogen source.
为了研究不同氮源的发酵培养对HD-1生长的影响，我们选用了花生饼和无盐鱼粉作为氮源。
To study the influence of fermented culture mediums with different nitrogen sources on the growth of HD-1, nut cake and non-salt fish meal were chosed as the nitrogen source.
为了研究不同氮源的发酵培养对HD-1生长的影响，我们选用了花生饼和无盐鱼粉作为氮源。
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