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:


  • U. S. Environmental Protection Agency | US EPA
    Website of the U S Environmental Protection Agency (EPA) EPA's mission is to protect human health and the environment
  • Environmental Protection Agency (EPA) | USAGov
    The Environmental Protection Agency (EPA) protects people and the environment from significant health risks, sponsors and conducts research, and develops and enforces environmental regulations
  • United States Environmental Protection Agency - Wikipedia
    The Environmental Protection Agency (EPA) is an independent agency of the United States government tasked with environmental protection matters [2] President Richard Nixon proposed the establishment of EPA on July 9, 1970; it began operation on December 2, 1970, after Nixon signed an executive order [3]
  • EPA in North Carolina | US EPA
    Portal for news and information about EPA's efforts in North Carolina and NC environmental conditions
  • US EPA Search
    Accessibility EPA Administrator Budget Performance Contracting Grants January 19, 2017 Web Snapshot No FEAR Act Data Privacy
  • Environmental Protection Agency - Britannica
    By the mid-1990s the EPA was enforcing 12 major statutes, including laws designed to control uranium mill tailings; ocean dumping; safe drinking water; insecticides, fungicides, and rodenticides; and asbestos hazards in schools
  • Enforcement and Compliance History Online | US EPA
    Use EPA's Enforcement and Compliance History Online website to search for facilities in your community to assess their compliance with environmental regulations
  • What does the Environmental Protection Agency (EPA) do? - USAFacts
    The Environmental Protection Agency (EPA) is an independent executive branch agency responsible for safeguarding human health and protecting the environment by ensuring that people in the US have access to clean air, land, and water
  • AirNow. gov
    EPA's National Air Quality Awareness Week is May 4-8 Air Quality Awareness Week highlights resources that increase air quality awareness and encourages people to stay aware of their air quality
  • Air Quality Planning Standards | Air Radiation | US EPA
    Air pollution comes from many different sources: stationary sources such as factories, power plants, and smelters and smaller sources such as dry cleaners and degreasing operations; mobile sources such as cars, buses, planes, trucks, and trains; and naturally occurring sources such as windblown dust, and volcanic eruptions, all contribute to air pollution





中文字典-英文字典  2005-2009