大房间的天花板高18英尺（约合5.5米），采用榫槽镶板。

The ceiling in the great room is 18 feet, with tongue-and-groove paneling.

youdao

大房间的天花板高18英尺（约合5.5米），采用榫槽镶板。

The ceiling in the great room is 18 feet, with tongue-and-groove paneling.

youdao