最好的方式做，这是确保你有你的PDF附近的一个很好的开始，优化的两句话。
The best way to do this is to make sure that you have a good, optimized sentence or two near the start of your PDF.
这里显示的技术可能不会是最好的方式做的事情，但他们应该和你开始在自己的努力达到了完美的实现。
The techniques shown here might not be the best way to do things, but they should work well and get you started in your own efforts to achieve a perfect implementation.
最好用抛硬币的方式来对此事做决定。
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