An auditorium or lecture hall; a large indoor space for lectures, presentations, or assemblies.
卒業式は学内の講堂で行われる予定です。
The graduation ceremony is scheduled to be held in the school's auditorium.
講堂の座席は200席ある。
The auditorium has 200 seats.
音響設備が良い講堂を予約した。
I reserved an auditorium with good acoustics.