活魚數目 的英文怎麼說

中文拼音 [huóyúshǔmù]
活魚數目 英文
good fish population
  • 活 : Ⅰ動詞1 （生存; 有生命） live 2 [書面語]（救活） save （the life of a person）:活人無算 （of a goo...
  • 魚 : 名詞1. （生活在水中的脊椎動物） fish 2. （姓氏） a surname
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 目 : Ⅰ名詞1 （眼睛） eye 2 （大項中再分的小項） item 3 [生物學] （把同一綱的生物按彼此相似的特徵分為幾...
  • 活魚 : live fish活魚艙 fish well; 活魚運輸 transportation of live fish
  • 數目 : number; amount
  1. In addition, more regular cleansing and replenishment of filter materials should be conducted if the water quality is poor and or fish stock density is high

    此外，如缸內的水質變差及或所飼養的活魚數目較多，亦應更頻密地清潔和補充過濾物料。
  2. In addition, more regular cleansing and replenishment of filter materials should be conducted if the water quality is poor andor fish stock density is high

    此外，如缸內的水質變差及或所飼養的活魚數目較多，亦應更頻密地清潔和補充過濾物料。
  3. " in heavily fished areas like hong kong you would expect to see some recovery of the fish populations around five years after fishing is banned, and it is highly likely that the two core areas which are just a few hundred metres in length are far too small to benefit larger fishes like parrotfishes which may roam over considerable areas, " dr. cornish said

    鄺力存博士指出：在香港等捕魚活動頻繁的地區，通常在禁止捕魚約五年後，魚類種群的數目理應有所回升。雖然現時設有兩個禁捕核心區，但縱長只有數百米，體形較大且活動范圍較廣的魚類如鸚鵡魚等未必能受惠。
  4. The annual yield of grass carp covers 20 % in total output of the fresh water fish, which is fast growing and tastes delicious, besides, the forages of grass carp are various, with a lower cost of raising, however, at present, the serious diseaes of grass carp results in a lower survival rate 10 - 15 %, which cause more then billions yuan economic losses per year to the fresh water cultiuation, especially, hemorrhagic virus of carp lasts for a long period of time and features a high death rate, therefore, it " s a woed - wide problem for the aquacultural scientific researchers to discover an effective settlement, which is still under the discussion

    其生長快、飼料來源廣、飼養成本低和肉味鮮美。但草魚病害多，危害嚴重，目前草魚由苗種養至成魚的成活率僅為10 - 15 ，每年給我國淡水養殖業造成數億元經濟損失。特別是病毒性的草魚出血病，流行季節長，發病死亡率高，因此，對草魚出血病的有效防治一直是世界各國水產科學工作者艱苦探索而又未能找到理想解決辦法的世界性難題。
  5. Abstraction of seawater for keeping live seafood should be avoided during and after inclement weather. ( 4 ) live fish and shellfish should be kept separately in different tanks and at a stock density not causing overcrowding

    應把活魚及介貝類水產動物分開放置在不同的魚缸內飼養，而在每個魚缸所飼養的活魚或介貝類水產數目不宜太多，以免過分擁擠。
  6. In some species the populations have crashed by 80 percent to 90 percent over the past decade or so because of over fishing and the despicable practice of fining, cutting the sharks ' fins off and throwing the still - living animals back in the water to slowly suffocate

    近十年因為過度捕撈及不合理的對待鯊魚翅（砍下活生生的鯊魚鰭后，讓它們在海水中而慢慢滅絕） ，某些種類被毀滅的數目已經從80 %升至90 % 。
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