Switzer says that the industrial nature of gas drilling, with heavy truck traffic and noise, and occasional wastewater and chemical spills,has transformed their peaceful country life.

VOA: standard.2010.01.02

We get used to the ticking of a clock or to noise of traffic but it's actually a very important form of learning because imagine life without it.

我们习惯了钟的滴答声和车来人往的噪音,但这却是一种非常重要的学习形式,我们不妨试想一下无法进行习惯化的情形。

耶鲁公开课 - 心理学导论课程节选