Bedeutung von “one” — Learner’s Dictionary

one

pronoun us uk /wʌn/
PARTICULAR PERSON/THING

A2 used to refer to a particular person or thing in a group that has already been talked about:

I've just made some biscuits, do you want one?
Throw those gloves away and get some new ones.
Chris is the one with glasses.

Mehr Beispiele

GENERAL formal

any person in general:

One ought to respect one's parents.
one at a time

B2 separately:

Eat them one at a time.
one by one

B2 separately, with one thing happening after another:

One by one the old buildings have been demolished.
one another

B1 each other:

How can they reach an agreement if they won't talk to one another?
(all) in one

combined into a single thing:

It's a vacation and art course all in one.

(Definition von “one pronoun” aus dem Cambridge Learner's Dictionary © Cambridge University Press)