He had known her long enough to recognize the ebb and flow of her moods.

[Tae-Bbong-E]

I can't catch the meaning of sentence. I know all meanings of words, though.
Could you explain it in detail?

He had known her long enough to recognize the ebb and flow of her moods.
from https://www.oxfordlearnersdictionaries.com/us/definition/english/ebb_1#ebb_idmg_1

 

[emsr2d2]

I can't [STRIKE]catch[/STRIKE] understand the meaning of the sentence below. I know [STRIKE]all meanings[/STRIKE] the meaning of all the words, though. Could you explain it in detail?

Note my corrections above.