Meaning of zǎo wǎn:
早晚
morning and evening; (in reference to sth that is bound to happen) sooner or later; one of these days; (dialect) at some time in the future
Wǒmen zǎowǎn dōu yào sànbù.
我们早晚都要散步。
We go for a walk morning and evening.
Zhǐyào nǐ nǔlì, zǎo wǎn huì chénggōng de.
只要你努力,早晚会成功的。
As long as you work hard, sooner or later you will succeed.
Qǐng fàngxīn, tā zǎowǎn huì lǐjiě de.
请放心,他早晚会理解的。
Rest assured, he will understand at some time in the future.
(coll.) (this, or that) point of time
Tā zǎo wǎn huì míngbái zhège dàolǐ.
他早晚会明白这个道理。
He will understand this principle sooner or later.