A1
continuing for a large amount of time
Dictionary examples:
The teacher's talk is very long. (0.0)
The test time is very long. (0.0)
The wait for food is long. (0.0)
I've been waiting a long time. (8.0)
a long movie/meeting (17.6)
It's a long time since I lived there. (18.2)
Apparently the sessions are an hour long. (28.5)