虽然未来的专栏文章将展示使用各种语言的解决方案，但Expect很可能是出现频率最高的一个。
While future columns will exhibit solutions in all kinds of languages, Expect is likely to be the one that appears most often.
从理论上讲，至少，这将是最好的选择尽可能高的频率，但在实践中，最高频率可以狂饮了处理器的功耗。
In theory, at least, it would be best to select the highest possible frequency, but in practice, the highest frequencies can guzzle up processor power.
关键是产生最高频率的可能性，还能保持平均的占空比常数。
The trick is to generate the highest frequency possible but keep the average duty cycle constant.
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