首先要进行适当的体育锻炼。

Must first carry on the suitable physical training.

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为了保持健康，我们必须进行适当的体育锻炼。

To keep fit, we must take proper exercise.

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为了保持健康，我们必须进行适当的体育锻炼。

To keep fit, we must take proper exercise.

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