Bedeutung von “act as sth” — Learner’s Dictionary

act as sth

phrasal verb with act us uk /ækt/ verb

B2 to do a particular job, especially one you do not normally do:

He was asked to act as an adviser on the project.

to have a particular effect:

Caffeine acts as a stimulant.

(Definition von “act as sth” aus dem Cambridge Learner's Dictionary © Cambridge University Press)