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七鳃鳗，八目鳗一种七鳃鳗科的原始细长淡水或溯河产卵鱼，特点是长有无。 Any of various primitive elongated freshwater or anadromous fishes of the family Petromyzontidae, characteristically having a jawless sucking mouth with rasping teeth. | ||
七鳃鳗是一种最简单的活体脊椎动物。 Lampreys are the simplest living vertebrates. | ||
与八目鳗类鱼区别开的七鳃鳗。 Any of several similar fishes, such as the lamprey and electric eel. | ||
鳗类，鳗：无颚的各种原始水生圆口纲脊椎动物中的一种，包括七鳃鳗和盲鳗。 Any of various primitive aquatic vertebrates of the class Cyclostomata, lacking jaws and including the lampreys and hagfishes. | ||
他们在活的七鳃鳗前释放它们死去的同胞的气息或者一种乙醇制剂。 They exposed live ones to either the smell of their dead brethren or an ethanol control. | ||
相关文献：“活化石——吸血七腮鳗” Related: "Bloodsucking Lamprey Found to Be 'Living Fossil.'" | ||
七鳃鳗隶属于圆口纲，是一类因营半寄生生活而引发机体显著特化的动物。 A commensal organism, especially an insect that lives in the nest or burrow of another species. | ||
未来的机器人可能会象中世纪时期的怪物，具有的鼩鼱的头，章鱼的足，七鳃鳗的身体。 Robots of the future might end up resembling medieval monsters, with shrews' heads, octopuses' arms and lampreys' bodies. | ||
现在，工程师们的仿生对象不仅有狗，还包括长有胡须的鼩鼱，会游泳的七鳃鳗，抓力十足的章鱼，善于攀爬的蜥蜴和穴居蛤。 It is not just dogs that engineers are copying now, but shrews complete with whiskers, swimming lampreys, grasping octopuses, climbing lizards and burrowing clams. | ||
结果表明：鳃耙、鳃弓、鳃丝上皮细胞表面都有环形隆嵴、断续的短纹； The results demonstrated that the external morphological structure of gill rakes, the gill arches and the gill filaments showed the presence of various features such as annular ridge and short lines. | ||
