Intramural describes things that happen inside one school, for that school’s own students — not a match against another school. Intramural sports are the games between classes, dorms, or clubs on the same campus.

Intramural describes thingsintramural形容的是那些事 that happen inside one school發生在同一所學校裡 for that school’s own students是給那所學校自己的學生的 not a match against another school不是跟別的學校比賽 Intramural sports are the games between classes, dorms, or clubs on the same campusintramural sports指的是同一個校園裡，班級、宿舍或社團之間的比賽

American universities use the word a lot; a student might “play intramurals” after class.

American universities use the word a lot美國的大學很常用這個字 a student might “play intramurals” after class學生下課後可能會去「play intramurals」

Though actually, the pieces mean “inside the walls”: the school as a place with walls around it. Today almost nobody is picturing real walls.

Though actually不過其實 the pieces mean “inside the walls”這個字的組成部分意思是「牆內」 the school as a place with walls around it把學校想成一個有牆圍起來的地方 Today almost nobody is picturing real walls現在幾乎沒有人會真的去想像那道牆

The opposite idea is a contest with another school. The word is mainly an adjective, but in US campus talk the plural noun “the intramurals” means those on-campus games.

The opposite idea相反的概念 is a contest with another school是跟別的學校比賽 The word is mainly an adjective這個字主要是形容詞 but in US campus talk不過在美國校園用語裡 the plural noun “the intramurals”複數名詞「the intramurals」 means those on-campus games指的就是那些校內比賽