1. 客车   baggage limit   passenger car   escalator   customs clearance   Hint Half-n-half Clue   2. 行李架   cabin   luggage rack   money exchange   customs clearance   Half-n-half Clue   3. 飞行员   escalator   customs clearance   family   pilot   Half-n-half Clue   4. 金钱   luggage rack   window   customs clearance   money   Half-n-half Clue   5. 早餐   shop   breakfast   customs officer   window   Half-n-half Clue   6. 兑换处   money exchange   family   currency   dinner   Half-n-half Clue   7. 开垦   weigh   lunch   aircraft   reclaim   Half-n-half Clue