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:


请选择你想看的字典辞典:
单词字典翻译
127385查看 127385 在百度字典中的解释百度英翻中〔查看〕
127385查看 127385 在Google字典中的解释Google英翻中〔查看〕
127385查看 127385 在Yahoo字典中的解释Yahoo英翻中〔查看〕





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:


  • How Do Telescopes Work? | NASA Space Place – NASA Science for Kids
    A telescope is a tool that astronomers use to see faraway objects Most telescopes, and all large telescopes, work by using curved mirrors to gather and focus light from the night sky The first telescopes focused light by using pieces of curved, clear glass, called lenses So why do we use mirrors today? Because mirrors are lighter, and they are easier than lenses to make perfectly smooth
  • What Is the James Webb Space Telescope? - NASA Space Place
    The telescope’s sunshield is about the size of a tennis court The temperature difference between the sun-facing and shaded sides of the telescope is more than 600 degrees Fahrenheit! It uses giant, gold-coated mirrors to see the universe Engineers inspecting the Webb telescope’s mirrors at NASA’s Goddard Space Flight Center
  • Telescope | NASA Space Place – NASA Science for Kids
    Telescope The Amazing Hubble Telescope The Hubble Space Telescope is a large space telescope orbiting Earth explore What Is the James Webb Space The James Webb Space Telescope is the largest, most powerful space telescope ever built explore How Do Telescopes Work? Telescopes use mirrors and lenses to help us see faraway objects
  • What Are Constellations? - NASA Space Place
    What’s the difference between astrology and astronomy? This image of the Orion nebula was captured by the Hubble Space Telescope It is located in the constellation Orion, below the three stars that form the hunter's belt Credit: NASA, ESA, M Robberto Astronomy is the scientific study of everything in outer space
  • Play | NASA Space Place – NASA Science for Kids
    play How Do Telescopes Work? Telescopes use mirrors and lenses to help us see faraway objects And mirrors tend to work better than lenses! Learn all about it here Play Helios: A Game About How the Where does the Sun's energy come from? Play Helios to find out! play Space Volcanoes!
  • What Is the Solar Cycle? | NASA Space Place – NASA Science for Kids
    Scientists work hard to improve our ability to predict the strength and duration of solar cycles These predictions can help them forecast these solar conditions, called space weather Forecasting of the solar cycle can help scientists protect our radio communications on Earth, and help keep NASA satellites and astronauts safe, too
  • Do | NASA Space Place – NASA Science for Kids
    Make a colorful work of galactic art do Make a Galactic Mobile Let the beauty of the galaxies shine in your room do Make a Cloud Mobile! These pretty clouds move, but do not go away do The Air We Breathe A picture book about Earth's atmosphere and its importance to life on Earth This link takes you away from NASA Space Place Links out
  • Color Your Universe: Find the Hidden Objects - NASA Space Place
    Color Your Universe: Find the Hidden Objects Great work finding all the hidden objects! Want to learn more about some of the things you found? Click on the badges below!
  • Solar System | NASA Space Place – NASA Science for Kids
    The James Webb Space Telescope is the largest, most powerful space telescope ever built explore All About the Sun The light of daytime comes from our closest star: the Sun Learn more about it! explore NASA Activity Books Become a NASA Space Place Explorer with these printable activity books do Color Your Universe: Find the
  • The Amazing Hubble Telescope - NASA Space Place
    The Hubble Space Telescope is a large space telescope orbiting Earth The telescope captures pictures of our universe to help scientists on Earth understand it better





中文字典-英文字典  2005-2009