| 单词 | 胎生 |
| 释义 | 〔kindle〕A brood or litter, especially of kittens.See Synonyms at flock 1一胎生下的小动物：一胎生下的小动物，尤其指猫 参见 flock1〔Paleocene〕Of, belonging to, or designating the geologic time, rock series, and sedimentary deposits of the first epoch of the Tertiary Period, preceding the Eocene Epoch and characterized by the appearance of placental mammals. See table at geologic time 古新代的：属于或是地质时代、岩系的段和沉积矿床第三纪的第一时代的，早于始新世时代并且以胎生哺乳动物的出现为特征 参见 geologic time〔mosasaur〕Any of various very large extinct aquatic lizards of the genusMosasaurus, having modified limbs that served as paddles for swimming. These lizards, thought to have been viviparous and carnivorous, may be early ancestors of the modern monitor lizard. 沧龙：任一种沧龙属 的形体很大且已绝迹的水生蜥蜴，长有退化肢，作为游泳的桨。这些蜥蜴，尽管是胎生的食肉动物，可能是现在蜥蜴的早期祖先 〔guppy〕A small, brightly colored live-bearing freshwater fish(Poecilia reticulata or Lebistes reticulatus), native to northern South America and adjacent islands of the West Indies and popular in home aquariums. 虹鳉：一种（虹鳉 胎鳉科 或 虹鳉） 色彩艳丽的胎生小鱼，产于南美洲北部和西印度群岛临近岛屿，在家庭的鱼缸中比较常见 〔surfperch〕Any of various viviparous marine fishes of the family Embiotocidae, found in shallow waters along the North American Pacific coast. Also called surf fish 海鲫：一种海鲫科的多胎生海洋鱼，生活在北美洲太平洋沿岸浅水区 也作 surf fish〔fetus〕The unborn young of a viviparous vertebrate having a basic structural resemblance to the adult animal.胎：基本结构与成年动物相似的胎生脊椎动物未出生的幼子〔topminnow〕Any of various small viviparous New World fishes of the family Poeciliidae, of fresh or brackish waters.浮鲦：产于新大陆的一种杂色鱼科小型胎生鱼，生活在淡水或半淡水中〔platy〕Any of several small freshwater live-bearing fishes of the genusXiphophorus of southern North America, especially X. maculatus and X. variatus, popular in aquariums for their bright and variable colors. Also called platyfish 剑尾鱼：一种北美洲南部产剑尾鱼属 小型淡水胎生鱼，尤指 新月鱼属 和 杂色新月鱼 ，因其鲜明而多变的颜色而常养于水族馆中 也作 platyfish〔swordtail〕A small, brightly colored, live-bearing freshwater fish(Xiphophorus helleri) of Central America, having a long, tapering extension of the caudal fin in the male and popular in home aquariums. 剑尾鱼：中美洲的一种颜色鲜艳、胎生的小型淡水鱼，（剑尾鱼） ，雄性的尾鳍很长，并呈逐渐变细状，在家庭的养鱼池中很常见 |
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