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
witlings查看 witlings 在百度字典中的解释百度英翻中〔查看〕
witlings查看 witlings 在Google字典中的解释Google英翻中〔查看〕
witlings查看 witlings 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:


  • Nonrenewable Energy - Education
    Nonrenewable energy comes from sources that will run out or will not be replenished in our lifetimes—or even in many, many lifetimes Most nonrenewable energy sources are fossil fuels: coal, petroleum, and natural gas Carbon is the main element in fossil fuels
  • Renewable Resources - National Geographic Society
    Renewable resources also produce clean energy, meaning less pollution and greenhouse gas emissions, which contribute to climate change The United States’ energy sources have evolved over time, from using wood prior to the 19th century to later adopting nonrenewable resources, such as fossil fuels, petroleum, and coal, which are still the
  • Non-Renewable Energy Resources
    energy? Briefly describe the difference between renewable energy resources and non-renewable energy resources, and explain how fossil fuels form Draw a T-chart on the board with the labels “Renewable” and “Non-Renewable ” Use the Energy Resources photo gallery to show different energy resources that are used to produce electricity
  • Renewable Energy Explained - Education
    More than 100 cities worldwide now boast receiving at least 70 percent of their energy from renewable sources, and still others are making commitments to reach 100 percent Other policies that could encourage renewable energy growth include carbon pricing, fuel economy standards, and building efficiency standards
  • What Are Fossil Fuels? - Education
    What are fossil fuels? How were they formed? Learn how human use of non-renewable energy sources, such as coal, oil, and natural gas, affect climate change
  • Renewable Energy - Education
    These nations (or groups of nations) produce the most energy using renewable resources Many of them are also the leading producers of nonrenewable energy: China, European Union, United States, Brazil, and Canada
  • Resource Types - Education
    Resources are characterized as renewable or nonrenewable; a renewable resource can replenish itself at the rate it is used, while a nonrenewable resource has a limited supply Renewable resources include timber, wind, and solar while nonrenewable resources include coal and natural gas
  • Geography Standard 16 - Education
    The characteristics and quantity of a resource are defined by whether it is a renewable, nonrenewable, or flow resource Renewable resources can be replenished if their environments remain intact Nonrenewable resources can be extracted and used only once
  • Biomass Energy - National Geographic Society
    Biomass energy can also be a nonrenewable energy source Biomass contains energy first derived from the sun: Plants absorb the sun’s energy through photosynthesis, and convert carbon dioxide and water into nutrients (carbohydrates) The energy from these organisms can be transformed into usable energy through direct and indirect means





中文字典-英文字典  2005-2009