brush up (on)这个词语在特定语言环境下很容易使人误译，那么你觉得brush up (on)应该怎么翻译呢?brush up (on)的原意又是什么呢?
brush up (on)
［例句］ Kerry was brushing up his Japanese when we went to see him.
［误译］ 当我们去看克里时，他正在涂擦 （他写错了的）日文字。
［原意］ 当我们去看克里时，他正在复习 日语。
［说明］ brush up意为“复习”、“重新学习”。上例也可写成Kerry was brushing up on his Japanese when we went to see him，即在up后加上on，这是美式英语中的用法。
