one after another
idiomPart ofanother
one after another — idiom
1. describing how people, things, or events appear or happen in a continuous string
1.idiom
Definition
describing how people, things, or events appear or happen in a continuous string, with each one following closely behind the last.
Example
The children climbed onto the school bus one after another, calling out to their friends.
Hiro opened the letters one after another, hoping for good news from the university.