一个英语小句子翻译.

题目

一个英语小句子翻译.
The sensation of sound involves a variety of factors in addition to its speak level.Advertisers are skilful at creating the impression of loudness through their expert use of such factors.One major contributor to the perceived loudness of commercial.
is (that much less variation in sound level occurs during a commercial.)后面还这句呢,

答案

除了说话的高低程度,声音的感觉还包括一系列的其他因素.
而广告商则很善于利用这些因素来创造广告给人们留下印象的深刻程度.
其中一个很主要影响商业的感知响度 的就是商业里出现的声级变化更少.