Class activity can take me away from the heavy study, I can take in the fresh air.

班级活动能让我脱离沉重的学习，呼吸新鲜的空气。

youdao

What's more, the air in the morning is really fresh and clean, so I can keep my mind clear and sound in the class.

更重要的是，早晨的空气干净清新，这样我就能在课堂上保持一颗清醒的头脑了。

youdao

Boys in my class were digging holes in he classroom to let fresh air in. Then they tried to dig a passage with their bare hands, and finally, I found a way to escape.

班里的男生在房间的废墟中正在努力挖开一些窟窿，让新鲜空气能够透进来，后来，他们又努力地用双手刨出了一个通道，我们终于设法逃了出来。

youdao