我们都需要新鲜空气，早晨的空气是新鲜的。

We all need fresh air, and air is fresh in mornings.

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“我们把宝宝带出去吧，”我建议道。“我们都需要一些新鲜空气。”

"Let's take the baby outside," I suggested. "We all need some fresh air."

《柯林斯英汉双解大词典》

首先，它使我们健康。我们大家都需要新鲜空气；此外，通过晨练，我们增进了健康。

First, it hel to keep us fit. We all need fresh air. Besides, by taking morning exercises we can improve our health.

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