hour by hour

hour by hour an hour pass by hour by hour和hour after hour 有何区别,详细说明下,急, "bill by the hour"帮翻译一下, an hour one hour 英语：by the hour和by a hour有何区别 night swallows the land；hour after hour goes by in silence e Peter's home is an hour by bus from the city center.对an hour rush hour hour音标 请问hour=hour*5; hour=hour+minute/12; hour after