At tökezleyip şovalyeyi düşürmüş olmalı.
- The horse must have stumbled and have toppled the knight.
Çocuk tökezledi ve dizlerinin üstüne düştü.
- The kid stumbled and fell to his knees.
I always stumble over verbs in Spanish.
He stumbled over a rock.
... When you pick up a newspaper, you often stumble across lots ...
... has never been easy sometimes we stumble ...