A dark narrow passage led to the main hall.

一条阴暗狭窄的走廊通向大厅。

Is this the main hall?

这里是大厅吗？

All the students were asked to assemble in the main hall.

全体学生获通知到大礼堂集合。

Yes, this is the Main Hall.

对，这个就是大殿了。

The main hall at Carnegie seats roughly 2,800.

卡内基音乐大厅约有2800个座位。