from day to day
US /frʌm deɪ tə deɪ/
UK /frʌm deɪ tə deɪ/

1.
得过且过, 日复一日
considering only one day at a time, without planning for the future
:
•
We're living from day to day, not knowing what tomorrow brings.
我们得过且过,不知道明天会带来什么。
•
His financial situation is so unstable that he has to live from day to day.
他的财务状况非常不稳定,不得不得过且过。
2.
日复一日, 变化无常
changing frequently or unpredictably
:
•
The weather here changes from day to day.
这里的天气日复一日地变化。
•
Her mood can vary greatly from day to day.
她的情绪可能日复一日地变化很大。