How to Use "insurmountable" with Example Sentences

1. These hurdles are not insurmountable .
2. Ultimately though , sora faces one possibly insurmountable hurdle in her rise to chinese superstardom .
3. For all practical intents and purposes , the speed of light is an insurmountable threshold .
4. My ongoing maths grades proved clearly to me that I was facing an insurmountable obstacle , so I gave up .
5. There is no economic hindrance to gaining the advantages of size in this way , nor any insurmountable legal obstacles .