80. The technological advances made it possible for the middle classes to enjoy what had once been affordable only to the very rich.
【分析】本句为复合句。句子主干为technological advances made it possible to enjoy 。it作形式宾语,真正的宾语是to enjoy what had once been affordable only to the very rich。what 引导的从句作enjoy的宾语。possible 是made的宾语补足语。
【译文】技术上的进步使中产阶级也能享受到那些原来只有有钱人才负担得起的东西。
81. The clock, called Sleep Smart, measures your sleep cycle, and waits for you to be in your lightest phase of sleep before rousing you.
【分析】本句为简单句。句子主干为 The clock measures cycle and waits,两个谓语并列平行。called Sleep Smart 是过去分词短语作定语,修饰 clock, 表示被动。现在分词短语 before rousing you 作时间状语,相当于一个从句:before it rouses you。
【译文】这种称做 睡精灵 的闹钟可以测量睡眠周期,等待人们进入浅眠状态后才将其唤醒。
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