"體育館"在英語中通常被稱為 "gymnasium"，這個詞來源于希臘語，意思是“體操”或“體育”，它指的是一個用于進行各種體育活動的場所，通常包括籃球、排球、羽毛球等運動設施。

1. What is the term for a large sports facility?
2. How do you refer to an indoor sports arena in English?
3. Can you explain what a gymnasium is?
4. In which context would we use the term "gym"?
5. How would you describe a gymnasium as a place where people exercise and perform physical activities?

回答：

1. The term for a large sports facility is a gymnasium.
2. To refer to an indoor sports arena in English, we would say it's a gymnasium or an indoor stadium.
3. A gymnasium is a large indoor space designed specifically for gymnastics and other athletic activities.
4. In the context of fitness centers and sports facilities, the term "gym" can be used to refer to various establishments that offer various types of exercises and workouts.
5. A gymnasium is a large indoor space with a variety of equipment and facilities for individuals to engage in physical activities such as weightlifting, cardio, yoga, and more. It typically includes a track, basketball court, and other sports-specific areas.