Çocuk tökezledi ve dizlerinin üstüne düştü.
- The kid stumbled and fell to his knees.
At tökezleyip şovalyeyi düşürmüş olmalı.
- The horse must have stumbled and have toppled the knight.
I always stumble over verbs in Spanish.
... instead stumbles upon chemistry that can bring sudden death. ...
... he stumbles largest and most grandiose models was built between sixteen fifty ...