n. 对进出国境的人或物品进行检查征税的国家机关 customs, department of government that inspects persons or goods entering and leaving a country and collects duties

adv. 表示事实与所说的或所预料的相符 really, indeed, as expected

n. 开国纪念日 National Day

adj. 对自己所不了解的事物觉得新奇而感兴趣 curious

adj. 面积大、范围广 wide spread, large-scale, broad; （人数）众多 numerous

be equal to, amount to