在体育馆用英语怎么说

在体育馆用英语可以说 "at the gym" 或 "at the sports arena"。其中，"gym" 来源于希腊语，意为 "a place for physical training and exercise"；"sports arena" 来源于拉丁语，意为 "a large, indoor or outdoor stadium for sports events"。

例句：

I'm going to the gym later to work out.
The basketball game will be held at the sports arena tonight.
She spends most of her weekends at the gym, trying to stay fit and healthy.
The sports arena was packed with fans, cheering for their favorite team.