Knock on (someone's) door
Translation of "knock on (someone's) door" into Russian
knock on (someone's) door
постучаться в (чью-то) дверь
Opportunity might knock on your door, so be prepared.
Возможность может постучаться в твою дверь, так что будь готов.
Definitions
To approach someone with a request, opportunity, or offer; can also mean to visit someone, usually at their home, and literally knock on their door to get their attention.