[N-COUNT 可数名词]教室 A classroom is a room in a school where lessons take place.
Oxford
class·room★/ˈklɑːsruːm; NAmEˈklæsruːm//ˈklɑːsrʊm; NAmEˈklæsrʊm/noun _classroom_objects_comp.jpg _classroom.jpg a room where a class of children or students is taught 教室;课堂◆classroom activities课堂活动◆the use of computers in the classroom在课堂使用计算机classroomclassroomsclass·room/ˈklɑːsruːm; NAmEˈklæsruːm/