This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
Employees came out of the office exit, one after another.
There are a lot of people subscribing to WaniKani, one after another, and we're happy about it, but we're having some issues with it as well.
I can’t wait for the day when new words pop up one after another on WaniKani.