1. The obstacles in his path seemed insurmountably high.
- Les obstacles sur son chemin semblaient insurmontablement hauts.

2. The challenge of climbing Mount Everest was insurmountably difficult.
- Le défi de grimper l'Everest était insurmontablement difficile.

3. The language barrier between us felt insurmountably vast.
- La barrière de la langue entre nous semblait insurmontablement vaste.

4. Despite their best efforts, the team found the task insurmountably challenging.
- Malgré leurs meilleurs efforts, l'équipe a trouvé la tâche insurmontablement difficile.

5. The divide between the two groups was insurmountably deep.
- La division entre les deux groupes était insurmontablement profonde.

6. The financial burden of the project was insurmountably heavy.
- Le fardeau financier du projet était insurmontablement lourd.