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A man can develop his mind by reading.

讀書增進個人的智慧。

We must work out some plan to increase our sales.

我們必須制定一些計劃來提高銷售成績。

I know what you mean.

我了解你的意思。

None of us girls are supposed to smoke.

我們女孩子都不該吸煙。

Because I wanted to thank you all for being kind to me while I have been here.

是因為想對我在此工作期間大家給我的幫助表示感謝。

But Li Ming has promised to come home for the summer vacations.

但是李明已經答應暑假回家。