根据题意,这三个字母能够组成单词gym。他的意思是体育馆。

There are two  gyms in our city and I often exercise in them on the weekend.我们的城市有两个体育馆,周末我经常在里面锻炼。

I think the gym is very big and beautiful。我觉得这个体育馆非常大,又很漂亮。