Bedeutung von “open (sth) up” — Learner’s Dictionary

open (sth) up

phrasal verb with open us uk /ˈəʊpən/ verb
CREATE OPPORTUNITY
OPEN LOCK

to open the lock on the door of a building:

The caretaker opens up the school every morning at seven.

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