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　　例句：

　　Grade inflation--the gradual increase in average GPAs(grade-point averages)over the past few decades—is often considered a product of a consumer era in higher education,in which students are treated like customers to be pleased.

　　语法分析：

　　双破折号里面的内容是插入语，可以按照原本语序进行翻译。句子主干是Grade inflation is often considered a product。of a consumer era in higher education做定语修饰product，翻译的时候前置到product前面。in which students are treated like customers to be pleased做定语修饰education。In which引导的定语从句过长可顺译，另起一句，重复下被修饰的名词即可。

　　翻译：

　　分数膨胀—在过去的几十年里平均成绩(平均绩点)逐渐增加——通常被认为是高等教育消费时代的产物，在这个时代，学生被当作顾客来对待。

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