Online security cameras, intelligent lighting and a wealth of sensors that control both temperature and air quality are offering an unprecedented level of control, efficiency, and improvements to what were once classed necessary costs when running a business or managing a large building. 提供空前级别的控制、效率和改进
The order essentially asks Apple to hack its own devices, and once it is in place, the precedent could be used to justify law enforcement efforts to get around encryption technologies in other investigations far removed from national security threats. 这个先例就会被用来
Lunch will be preceded by a short speech from the chairman. 午餐开始之前主席会发表一段简短的讲话。
An epidemic on this scale is without precedent. 如此规模的流行病是史无前例的。
Crime has increased on an unprecedented scale. 犯罪率增幅之大前所未有。