platypus是什么意思
platypus 英[ˈplætɪpəs] 美[ˈplætɪpəs]
n. 鸭嘴兽
[例句]At roughly 2.2 billion base pairs , the platypus genome is about two-thirds the size of the human genome , the researchers found.
研究人员发现,鸭嘴兽有大约22亿个碱基对,是人类碱基对数量的三分之二。
platypus怎么读
platypus的读音是ˈplætɪpəs。platypus的意思是鸭嘴兽。是最原始的哺乳动物之一,它是未完全进化的哺乳动物,种类极少,同属之中只有鸭嘴兽一种动物,也是最低等的哺乳动物之一。18世纪后期,乔治·肖收到鸭嘴兽标本,以为这种生物是恶作剧的产物,后于1799年命名。鸭嘴兽嘴和脚像鸭子,而身体和尾部像海狸。2500万年前就已出现,至今仍生活在澳大利亚。由于鸭嘴兽数量较少且分布较小,故暂未发现亚种。鸭嘴兽全身裹着柔软褐色的浓密短毛,脑颅与针鼹相比,较小,大脑呈半球状,光滑无回。四肢很短,五趾具钩爪,趾间有薄膜似的蹼,酷似鸭足,在行走或挖掘时,蹼反方向褶于掌部。它通身长满柔软的皮毛,像一层上好的防水衣,嘴巴极宽扁,像面具一样装在脑袋上,形似鸭嘴,质地柔软,似皮革一般,上面布满神经,能像雷达扫描器一般,接受其它动物发出的电波。鸭嘴兽仗着这一利器,在水中寻找食物和辨明方向。嘴内有宽的角质牙龈,但没有牙齿,尾大而扁平,占体长的1/4,在水里游泳时起着舵的作用。鸭嘴兽生活习性:除了哺乳期外,鸭嘴兽一生都过着独居的生活,大多时间都在水里,是游泳能手。它的皮毛有油脂,能保持它身体在较冷的水中仍保持温暖。游泳时,用前肢蹼足划水,靠后肢掌握方向,捕食一些生活在河中的小的水生动物,靠电信号及其触觉敏感的鸭嘴寻找在河床底的食物。鸭嘴兽喜欢吃一些小的水生动物,通常在清晨和黄昏的时候在水边猎食甲壳类、蚯蚓等动物。但是鸭嘴兽没有哺乳动物般尖利的牙齿,每次在水中逮到食物,先藏在腮帮子里,然后浮上水面,用嘴巴里的颌骨上下夹击后才大快朵颐。
鸭嘴兽用英语怎么说?
问题一:鸭嘴兽的英文名叫什么? duckbill,platypus鸭嘴兽
问题二:鸭嘴兽的英文介绍 The platypus (Ornithorhynchus anatinus) is a semi-aquatic mammal endemic to eastern Australia, including Ta *** ania. Together with the four species of echidna, it is one of the five extant species of monotremes, the only mammals that lay eggs instead of giving birth to live young. It is the sole living representative of its family (Ornithorhynchidae) and genus (Ornithorhynchus), though a number of related species have been found in the fossil record.
The bizarre appearance of this egg-laying, venomous, duck-billed, beaver-tailed, otter-footed mammal baffled European naturalists when they first encountered it, with some considering it an elaborate fraud. It is one of the few venomous mammals, the male platypus having a spur on the hind foot that delivers a venom capable of causing severe pain to humans. The unique features of the platypus make it an important subject in the study of evolutionary biology and a recognisable and iconic symbol of Australia; it has appeared as a mascot at national events and is featured on the reverse of the Australian 20 cent coin. The platypus is the animal emblem of the state of New South Wales.[3]
Until the early 20th century it was hunted for its fur, but it is now protected throughout its range. Although captive breeding programmes have had only limited success and the platypus is vulnerable to the effects of pollution, it is not under any immediate threat.
问题三:鸭嘴兽简介英语简短 The platypus (Ornithorhynchus anatinus) is a semi-aq丹atic mammal endemic to eastern Australia, including Ta *** ania. Together with the four species of echidna, it is one of the five extant species of monotremes, the only mammals that lay eggs instead of giving birth to live young. It is the sole living representative of its family (Ornithorhynchidae) and genus (Ornithorhynchus), though a number of related species have been found in the fossil record.
这是维基上的英文介绍,也就是英文版的百度百科,没有比这个更好的了
鸭嘴兽的英文
鸭嘴兽的英文是platypus。资料扩展:鸭嘴兽,是鸭嘴兽科鸭嘴兽属哺乳动物。鸭嘴兽因其吻部似鸭嘴而得名。身体背腹侧扁,流线型;背面深褐色,腹面灰白色到黄色;体表覆盖稠密的防水被毛;尾形与河狸相似;四肢粗短;眼小;幼体有牙齿,长成后即被角质磨垫取代。最古老的鸭嘴兽于南美洲的6100万年前的地层被发现,其进化史主要是牙齿的退化及身体尺寸缩小。鸭嘴兽分布于澳大利亚东部和塔斯马尼亚岛。能适应多种多样的环境,在溪流和湖泊的岸边筑巢而居。晨昏性活动;每天可以睡14小时;会把毒液当作一种进攻性武器用以在繁殖期维护自己的领地。主要在水底觅食,捕食蠕虫、昆虫幼虫、淡水虾及鳌虾等无脊椎动物。一夫多妻制,交配季节在6-10月,哺乳期3-4个月。笼养状态下,寿命17年,野外有11年后被重捕的记录。鸭嘴兽在澳大利亚文化中占有重要地位,常出现在神话故事、歌曲、诗歌或邮票上。20世纪初人类还在为猎取皮毛而捕杀鸭嘴兽,除澳大利亚南部种群灭绝外,鸭嘴兽在其分布区内都还很常见。主要威胁因子是栖息地退化、大坝建设、灌溉、污染、渔网及陷阱。鸭嘴兽被世界自然保护联盟(IUCN)列入在《世界自然保护联盟濒危物种红色名录》中,为近危(NT)保护等级。鸭嘴兽可追溯到近150年前的鸭嘴兽标本2022年5月在英国剑桥大学博物馆被重新发现,这些标本是证明某些哺乳动物会产卵的关键证据,这一事实改变了科学思维的进程并支持了进化论。最古老的鸭嘴兽于南美洲的6100万年前的地层被发现,其进化史主要是牙齿的退化及身体尺寸缩小。