做gym是什么意思

例句：

The commons is next to the gym.

学生公共食堂在体育馆的旁边。

I was in the gym lifting weights.

我正在健身房举哑铃。

The school has recently built a new gym.

学校最近新建了一个体育馆。

I just joined a gym.

我刚加入了健身俱乐部。

I overdid it in the gym and hurt my back.

我在健身房练得过火了，结果弄伤了背。