她的财富是日积月累的。

Her wealth is accumulate over a long period.

他的知识是日积月累的。

His knowledge is accumulate over a long period.

成功是日积月累的结果。

Success is the result of accumulate over a long period.

这些问题是日积月累形成的。

These problems have accumulate over a long period.

经验需要日积月累。

Experience needs to accumulate over a long period.

学语言是靠日积月累的！

Learning a language depends on persisting day by day.

日积月累,水滴石穿.

Water dropping day by day wear the hardest rock away.

日积月累，你的步法将越来越有效率。

Over time, your gait will become more efficient.

成功的关键在于每天3小步，日积月累。

The key to success is the sum of 3 steps a day.

这种态度，日积月累，在家人之间就会发展为抱怨和不和。

This attitude, over the long haul, will develop very resentful and uncooperative family members.