“中层楼”用英语怎么说？

接待员: 是的, 我们在中层楼有免费的自助式早餐供应.Receptionist: Yes, we have a complementary breakfast buffet on the mezzanine.中层楼办公室处的栏杆要比通常的稍微高一些.The balustrades of the mezzanine office are slightly higher than usual.提交议会的规划是一幢附有中层楼的两层三角形建筑....