gymnasium

Compared meaning: a place for exercise (noun).

比较义项：供运动健身的场所（名词）。

• gym

  The everyday, informal word for a fitness facility, especially a commercial one with exercise equipment; used constantly in casual speech and common collocations like 'go to the gym'.

  日常口语中最常用的说法，尤指配有健身器材的（通常是商业性质的）健身房；常用于诸如“去健身房”这类常见搭配中。

  I usually go to the gym before work to stay in shape.

  我通常在上班前去健身房锻炼，以保持身材。

• gymnasium 本词

  A more formal word, typically referring to a large indoor room or building at a school or institution used for sports and exercise classes rather than personal workouts.

  更为正式的说法，通常指学校或机构里用于体育课和集体运动的大型室内房间或建筑，而不是个人健身的场所。

  The students gathered in the gymnasium for morning exercise class.

  学生们在体育馆集合，准备上早间体育课。

Gym and gymnasium both mean a place to exercise, but gym is the everyday, informal word for a fitness facility, especially a commercial one with equipment. Gymnasium is more formal, usually a large room or building at a school used for sports classes.

这两个词都指供人锻炼身体的场所，但语体不同：gym 是日常口语中最常用的说法，多指配有器材的健身房；gymnasium 更正式，常指学校或机构里用于体育课、集体运动的大房间或建筑。