广告公司经常制作替代广告或在报纸、电视台等预先测试的广告。
Agencies often produce alternative ads or commercials that are pretested in newspapers, television stations, etc.
书店、电影院、电台和电视台等，都会同样的挑剔。
Bookstores, the megaplex, radio, and network TV can be equally demanding.
热量约束可以很好地强制计算机、程序控制台等的设计决策。
Thermal constraints could well force design decisions in computers, game consoles, and the like.
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