by and by

US /baɪ ən ˈbaɪ/
UK /baɪ ən ˈbaɪ/
"by and by" picture
1.

遲早, 不久

eventually; after a period of time

:
The sun will come out by and by.
太陽遲早會出來。
We'll get there by and by, don't worry.
我們遲早會到那裡的,別擔心。