“小龍蝦”英語怎么說
名詞解釋：小龍蝦(學名：Procambarus clarkii)：也稱克氏原螯蝦、紅螯蝦和淡水小龍蝦。形似蝦而甲殼堅硬。成體長約5.6~11.9厘米，暗紅色，甲殼部分近黑色，腹部背面有一楔形條紋。幼蝦體為均勻的灰色，有時具黑色波紋。螯狹長。甲殼中部不被網眼狀空隙分隔，甲殼上明顯具顆粒。額劍具側棘或額劍端部具刻痕。你知道用英語怎么表達嗎?
The North American signal crayfish, which had been introduced to English waters decades ago and spread steadily north, were taking over.
Some of these things were about 10 to 12 inches long. At that size, they don't even look like crayfish; they look like lobsters.
The problem isn't just the size or quantity of the intruders; it's that the crayfish eat the same insects and larvae as the prize-winning trout that are native to these streams.
Many local residents are worried that the crayfish may be destroying Scottish ecology.
北美標志性的小龍蝦是在數十年前被引入英國境內，并且向北蔓延，最后占據了水域。
有一些小龍蝦都能長到10到12英寸。有著這樣的尺寸，它們甚至看起來都不像小龍蝦，而更像大龍蝦。
問題不是只在于這些入侵者的尺寸或者數量，而是這些小龍蝦會吃掉同樣生活在這片水域的鱒魚賴以為生的昆蟲和幼蟲。
許多當地的居民都擔心這些小龍蝦可能會毀掉蘇格蘭的生態。
【講解】
文中的crayfish就是“小龍蝦”的意思，也稱紅螯蝦和淡水小龍蝦，因肉味鮮美廣受人們歡迎，尤其是麻辣小龍蝦(hot and spicy crayfish)，而龍蝦(lobster)主要分布于熱帶海域(tropical seas)，是名貴的海產品(marine product)。
第三段中的trout解釋為“鱒魚”，是一類很有價值的垂釣魚和食用魚，類似的垂釣魚還有：grouper(石斑魚)、tuna(金槍魚)、cod(鱈魚)等。