Day by day,hour after hour.

hour by hour和hour after hour 有何区别,详细说明下,急, hour by hour hour after 英译汉,谢One day,after he plays basketball for an hour with his How many ______( hour) in a day? We covered ___ an hour that day. an hour a day怎么造句 a second a minute an hour a day goes by 歌词 英语句子改错：It take me an hour to go to school by bike every day. ____ can you have an hour to read English every day?—By gett it takes him over an hour by underground to work every day.同 a second,a minute,an hour,a day goes by.中文