At tökezleyip şovalyeyi düşürmüş olmalı.
- The horse must have stumbled and have toppled the knight.
Tom geriye tökezledi.
- Tom stumbled backwards.
I always stumble over verbs in Spanish.
... has never been easy sometimes we stumble ...
... Isaac Newton do? When he was 23 years old, not only did he stumble upon the force of ...