In this post, we look at adverbial phrases with the pronoun ‘one‘. In the English Vocabulary Profile:
(all) in one = C2 combined into a single thing
one by one= B2 separately, one after the other
Frequency in iWeb corpus:
one by one 135405
all in one 60329
you could use them as a living probiotic drink
and health monitor, all in one?
give me continuity,
but give me transcendence and mystery and awe all in one.
Then organs shut down one by one,
We‘ll go through them one by one.