为始终如一地大或始终如一地小的消息进行优化并不困难，但是为极端的变异性而进行优化则非常困难。
Tuning for consistently large or consistently small messages is not difficult, but tuning for extreme variability is.
为始终如一地大或始终如一地小的消息进行优化并不困难，但是为极端的变异性而进行优化则非常困难。
Tuning for consistently large or consistently small messages is not difficult, but tuning for extreme variability is.
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