英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字,中文词皆可:

crewman    音标拼音: [kr'umən]


安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Shark - Wikipedia
    Sharks are a group of elasmobranch cartilaginous fishes characterized by a ribless endoskeleton, dermal denticles, five to seven gill slits on each side, and pectoral fins that are not fused to the head Modern sharks are classified within the division Selachii[1] and are the sister group to the Batomorphi (rays and skates)
  • Sale Offers | Browse our Latest Deals - Shark®
    Browse the latest offers available from Shark® Save money on products such as vacuums, hair dryers and stylers, and air purifiers
  • Shark | Attacks, Types, Facts | Britannica
    Shark, any of numerous species of cartilaginous fishes that make up the order Selachii (class Chondrichthyes) Most species have a tough skin that is dull gray in color and roughened by toothlike scales
  • Sharks, explained | National Geographic
    Sharks can rouse fear and awe like no other creature in the sea Find out about the world's biggest and fastest sharks, how sharks reproduce, and how some species are at risk of extinction
  • Shark Species — Shark Research Institute
    An annotated and illustrated catalogue of shark species known to date by Leonard J V Compagno, Ph D , the world’s foremost expert on sharks and Director of our Board of Trustees
  • Shark Facts | Fish | BBC Earth
    Sharks are often characterised as vicious killers, but in reality, they’re a diverse and endangered group of creatures that add tremendous value to marine ecosystems Despite having a reputation as vicious, bloodthirsty predators, sharks are much more benign, varied and diverse than their portrayal in popular culture suggests
  • Sharks - Smithsonian Ocean
    There are more than 500 species of sharks swimming in the world’s ocean Yet when most people think of these cartilaginous fish, a single image comes to mind: a large, sharp-toothed and scary beast That generalization does sharks a huge disservice, as they have far more variety than that
  • Shark Facts - Woods Hole Oceanographic Institution
    Sharks are ancient, diverse predators with over 500 species They're vital to ocean health—but slow to reproduce and threatened by overfishing
  • Sharks | World Wildlife Fund
    There are over 400 shark species worldwide Learn how WWF protects sharks from threats like overfishing and habitat loss
  • Shark Resource Collection | National Marine Sanctuaries
    Sharks, a species that has existed for more than 400 million years, exist throughout our world’s ocean with more than 450 species of shark in total Most sharks are apex predators and sit at the top of the food chain





中文字典-英文字典  2005-2009