walk into
US /wɔːk ˈɪntuː/
UK /wɔːk ˈɪntuː/

1.
entrer dans, tomber sur
to enter a place by walking, often unexpectedly or accidentally
:
•
I didn't see the glass door and almost walked into it.
Je n'ai pas vu la porte vitrée et j'ai failli entrer dedans.
•
She walked into the room and everyone stopped talking.
Elle entra dans la pièce et tout le monde cessa de parler.
2.
tomber sur, se retrouver dans
to encounter or experience something unexpectedly, often something negative
:
•
He walked into a trap set by his enemies.
Il tomba dans un piège tendu par ses ennemis.
•
You might walk into some trouble if you're not careful.
Tu pourrais te retrouver dans des ennuis si tu n'es pas prudent.