Everyday we study with our classmate and teacher.

每天我们研究我们的同学和老师。

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We sympathized with our classmate whose mother was very ill.

我们十分同情那位母亲得了重病的同学。

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This is our classmate, Mary, whose home is not far from our school.

这是我们的同学玛丽，她的家离我们学校不远。

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When one of our daughters got into a spat with a classmate, we asked her which of our core values seemed to apply.

WSJ: Run Your Family Like a Business

So understand, especially for our students, that one neighbor, that one classmate you get to the polls on November 6th, that one voter you persuade, that one new volunteer you recruit -- that could be the one that puts us over the top.

WHITEHOUSE: Remarks by the First Lady at a Campaign Event