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：

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:


  • Birds - The Australian Museum
    Birds our feathered friends Birds are warm-blooded vertebrates, they all have feathers, lay hard-shelled eggs and have strong, yet lightweight, bones Around 10,000 species of bird inhabit the world, ranging from tiny hummingbirds up to huge ostriches Australia is home to two of the largest flightless birds- the Emu and Southern Cassowary
  • What is a vertebrate? – KS2 Science curriculum - BBC Bitesize
    Vertebrates can be fish, reptiles, mammals, birds and amphibians This cockroach is called a hissing cockroach and it's a type of invertebrate Invertebrates have no backbone
  • Diversity of Nervous Systems | Biology for Majors II
    Compared to invertebrates, vertebrate nervous systems are more complex, centralized, and specialized While there is great diversity among different vertebrate nervous systems, they all share a basic structure: a CNS that contains a brain and spinal cord and a PNS made up of peripheral sensory and motor nerves
  • Biodiversity - ScienceDirect
    This chapter discusses biodiversity, which represents the variety of life The convention defines biodiversity as “the variability among living organisms from all sources including terrestrial, marine, and other aquatic ecosystems and ecological complexes of which they are a part: this includes diversity within species, between species, and of ecosystems
  • Seabirds | National Oceanic and Atmospheric Administration
    Birds within this class generally have a longer life span, breed later, and produce fewer young than other birds Many seabird species are highly migratory, with some known to travel over 40,000 miles each year Among the many types of seabirds are albatrosses, petrels, gulls, storks, and penguins
  • biodiversity module 1 Flashcards - Quizlet
    Relatively small areas of land that contain an exceptional number of endemic species and are at high risk from human activities cover only 2 4% of the world's surface, but they account for over 50% of all plant and 42% of all animal species
  • What constitutes “social complexity” and “social intelligence . . .
    In the last decades, the assumption that complex social life is cognitively challenging, and thus can drive mental evolution, has received much support from empirical studies in nonhuman primates While extending the scope to other mammals and birds, different views have been adopted on what constitutes social complexity and which specific cognitive skills are selected for Notably, many avian





中文字典-英文字典  2005-2009