问题
改错题
My father is getting better day after day.
答案
day after day—day by day
day by day意思是：一天天地, 逐日；day after day意思是：一天又一天地, 日复一日地。
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My father is getting better day after day.
day after day—day by day
day by day意思是：一天天地, 逐日；day after day意思是：一天又一天地, 日复一日地。
