定义一个摘自另一个源的块引用 - 在线编辑器

          <blockquote cite="http://www.worldwildlife.org/who/index.html">
  For 50 years, WWF has been protecting the future of nature. The world's leading conservation organization, WWF works in 100 countries and is supported by 1.2 million members in the United States and close to 5 million globally.
</blockquote>

        