研究人员日复一日地记录潮汐变化,最终发现了异常规律。Yánjiū rényuán rìfù yí rì de jìlù cháoxī biànhuà, zuìzhōng fāxiàn le yìcháng guīlǜ.The researchers recorded tidal changes day after day and eventually discovered an unusual pattern.
他日复一日地练习钢琴,终于赢得了比赛。Tā rìfùyīrì de liànxí gāngqín, zhōngyú yíngdé le bǐsài.He practised piano day after day and finally won the competition.
日复一日的训练很枯燥,但她的成绩慢慢提高了。Rìfùyīrì de xùnliàn hěn kūzào, dàn tā de chéngjì mànmàn tígāo le.Training day after day is boring, but her results slowly improved.