我们从小学到大学一直在一起，但后来就分道扬镳了。

We went through school and college together, but then our paths diverged.

《牛津词典》

我可以为他们的孩子辅导功课，从小学到高中都可以。

I can tutor their children, from elementary school to high school.

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“鸠山先生是典型的需要为日本开拓道路，却没有做到的例子，”京都大学的侍鸟先生说，“菅直人先生必须表明，他已经从小泉那里学到了该学的东西。”

“Mr. Hatoyama is a classic example of a prime minister who needed to set a course for Japan, but couldn't,” said Kyoto University's Mr. Machidori. “Mr. Kan must show he has learned the Koizumi lesson.

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or they would help, they would tutor elementary school- to high school- aged students,

也可以为他们的孩子辅导功课，从小学到高中都可以，

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