öppna sig angolul

expand [expanded, expanding, expands]▼((intransitive) to change from a smaller form/size to a larger one)
verb
[UK: ɪk.ˈspænd] [US: ɪk.ˈspænd]

open [opened, opening, opens]▼(to become open)
verb
[UK: ˈəʊ.pən] [US: ˈoʊ.pən]