第一句：When will the tour bus leave?
    游覽車什么時候開呢？
    A: Excuse me. When will the tour bus leave?
    請問游覽車什么時候開？
    B: In three minutes.
    3分鐘以后。
    A: When will it get to the terminal?
    什么時候到終點站呢？
    B: 1: 30.
    一點半。
    第二句：How often does the bus come?
    間隔多久來一趟公交車呢？
    A: Excuse me. How often does the bus come?
    請問多久來一趟公交車呢？
    B: 20 minutes.
    20分鐘。
    相關(guān)表達法：
    What time does the tour bus leave? 旅游車什么時候出發(fā)呢？
    觀光游覽車用英語說是：sightseeing bus 或者說 tour bus。