concourse
noun [ C ] uk/ˈkɒŋ.kɔːs/ us/ˈkɑːn.kɔːrs/
（火车站、机场等的）广场，大厅
a large space or room in a public building such as a station or airport that people meet in or pass through
There's a ticket machine in the main concourse. 在主大厅有一台售票机。