One of the most recent noise-reducing technologies shepherded through the research process by NASA and now making a difference on commercial jet engines is chevrons.

一项最新的减噪技术引领着NASA的研究进程，并使商业喷气式引擎焕然一新，这就是chevrons(译注——引擎喷口的锯齿状后缘设计)。

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While the living conditions become worsen because of the noise and privacy factor, its potential for the commercial used is enhanced.

由于噪音和隐私的因素，这里的生活环境也越来越差，但其潜在的商业价值逐渐加强。

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The Ordinance controls construction noise, noise from commercial and industrial premises, neighbourhood noise and noise from newly-registered motor vehicles.

该条例就建筑噪音工商业噪音邻舍噪音及新登记汽车发出的噪音作出管制。

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Sonic Youth continued to refine its use of noise in an increasingly pop-driven songwriting context, greatly expanding its commercial success in the '90s.

NPR: Sonic Youth: The First Quarter-Century

There is so much commercial shipping activity and it is so loud that scientists are starting to worry about the effect that the noise is having on the whales.

BBC: Whales benefit from action on ocean noise