“I remember quite clearly one of my middle-school teachers telling me that I was a stone with sharp, jagged edges, but that I would turn into a smooth river stone as I grew older, ” Mr. Zhao said.

我记得很清楚一位中学老师说过，我是个棱角尖利的石头，不过随着年龄的增长，我会变成光滑的鹅卵石。

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“I remember quite clearly one of my middle-school teachers telling me that I was a stone with sharp, jagged edges, but that I would turn into a smooth river stone as I grew older, ” Mr. Zhao said.

我记得很清楚一位中学老师说过，我是个棱角尖利的石头，不过随着年龄的增长，我会变成光滑的鹅卵石。

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