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.
... but I seem to have stumbled upon the ballroom ha well ...
... old, he stumbled upon the universal force of gravitation. ...