1. 银行   water   domestic   bank   customs duty   Hint Half-n-half Clue   2. 自助食堂   water   duty free   cafeteria   gate   Half-n-half Clue   3. 外币，外汇   foreign currency, foreign exchange   seat   return ticket, round-trip ticket   luggage trolley   Half-n-half Clue   4. 靠走道的位子   baggage reclaim, baggage collection   baggage, luggage   customs duty   aisle seat   Half-n-half Clue   5. 问讯处   cancellation   gate   terminal   information desk   Half-n-half Clue   6. 来回票，双程票   departure lounge   water   return ticket, round-trip ticket   excess baggage   Half-n-half Clue   7. 航班号   aisle seat   customs duty   international   flight number   Half-n-half Clue