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。
