我想像使用Markdown一样编写可重用的超链接：
You can also follow [this link][1] if you want. But if you really don't
want to follow [my link][1], you could try [a better one][1].
[1]: http://google.com
是否可以使用ReST做到这一点？当我尝试使用Pandoc转换上面的代码时，我得到了3倍的相同链接：
You can also follow `this link`_ if you want. But if you really don’t
want to follow `my link`_, you could try `a better one`_.
.. _this link: http://google.com
.. _my link: http://google.com
.. _a better one: http://google.com