去年，湛江地区有10%的罗非鱼农户都放弃了养鱼的生意。
Last year, 10 percent of the Zhanjiang region's tilapia farmers gave up on farming the fish.
即使是养鱼的水也开始变得不新鲜，粪便和吃剩下的食物堆积，很快使水变得污秽。
Even if the water in which the fish are reared starts out fresh, the build-up of faeces and uneaten food soon makes it foul.
专家们并不能确切地知道，人们是在什么时候开始养鱼的，但专家们说，人们对鱼的兴趣已经有好几千年了。
Experts do not really know when people began keeping fish as pets. But they say that people have been interested in fish for thousands of years.
本文总结和分析了宜都、当阳两个试点水面种青养鱼的试验情况。
In this paper the experiments of the planting on water surface and fish cul-turing in Yidu and Dangyang are summed up and analysed.
稻田养鸭、养鱼能明显改善土壤物理性状，提高土壤的通气性。
Raising duck or raising fish in rice field can clearly improve soil physics properties and the soil aeration.
长竹竿围成的网箱可以养鱼。
但是除了我看到第一只活着的鳕鱼之外已无所可记的了：养鱼工作主要就是投球状的鱼食，这比拖着渔网深入大海无聊多了。
But apart from seeing my first live cod, there was little to write down: fish farming mostly involves slinging food pellets, and is far duller than hauling nets far out to sea.
养鱼业的目标同种植业、畜牧业一样，是尽可能地增加食品的生产，提高食品的质量。
Fish culture has the same objective as agriculture and stock breeding, that is, to increase production by all means and improve its quality.
事实上没有一个克雅氏病案例与食用养殖鱼类有关，但并不能保证牛的副产品饲养鱼是安全的。
The fact that no cases of Creutzfeldt Jakob disease have been linked to eating farmed fish does not assure that feeding rendered cow parts to fish is safe.
废水中的营养物质可喂养鱼类，因此没必要加额外食物。
Nutrients in the wastewater support the fish, so no external food is added.
在今天的美国，养鱼依然是一种激动人心的爱好。
Today fish collecting is still an exciting hobby in the Unite States.
如果以更大的数量养鱼，最好是饲养植食鱼类。
If fish are to be farmed in ever greater Numbers, most had better be plant-eaters.
国会正在考虑制定法律来允许建立更多的养鱼场。
The Congress is considering legislation that could permit many more fish farms.
另一个引起争论的问题是，假如这些鲑鱼从养鱼场逃到野外会产生什么影响。（美国）“水恩惠”公司则说这个问题无需多虑。
Another contentious issue being debated is what will happen if these salmon escape from fish farms into the wild. AquaBounty says not to worry.
丹·丹博说，他有意从不把自己养的四只狗、两只猫、寄居蟹和养鱼缸的所有费用加起来。
Dan Denbow said he had purposely never added up all the expenses from his four dogs, two cats, hermit crab, and aquarium.
该中心表示，对使用这种饲料的四个养鱼场进行的检测显示，所有鱼类样本全部合格。
But the center said tests of fish from four farms that used the feed turned up satisfactory levels.
所以，就没有必要再对养鱼缸中的水进行更换，这导致了第一批水族馆的兴建。
So it was no longer necessary to change the water in a tank for fish to live there. This led to the building of the first public aquariums.
陈和其他养鱼户说，为了避免拒收，他们是不会让破坏罗非鱼味道的物质进入水塘的。
To avoid rejections, Chen and other farmers say, they keep their ponds clear of material that could ruin the tilapia's taste.
八百多吨鱼死亡并腐烂于菲律宾养鱼场，这些养鱼场位于马尼拉南部塔阿尔火山附近的湖里。
More than 800 tons of fish have died and rotted on fish farms in a lake near Taal Volcano south of Manila.
几乎美国消耗的75%的鲑鱼来自于养鱼场。
Now, almost seventy-five percent of the salmon that Americans eat comes from fish farms.
桑基鱼塘是植桑养蚕同池塘养鱼相结合的综合经营方式，是一种特殊的基塘农业。
Mulberry-base-pond, a special dike-pond mode, was a kind of management integrated fish ponds with breeding of mulberry silkworm.
漂亮的红光具有很强的穿透力，可以直达养鱼缸底部。
The light is red and beautiful, and has strong penetrating power to reach the bottom of aquarium.
漂亮的红光具有很强的穿透力，可以直达养鱼缸底部。
The light is red and beautiful, and has strong penetrating power to reach the bottom of aquarium.
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