他不辞辛劳地亲自写信给他们每一个人。

He took the trouble to write to each of them personally.

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He took the trouble to write to each of them personally.

trouble 的本义是"麻烦、困难",在这里指"费心、费力"的意思。 take the trouble to do something 是一个固定短语,表示"不辞辛劳地做某事",强调主动付出额外的努力去做某事。

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