| Nuclear fusion is a technology that may never mature, because of unsurmountable technical problems such as heat resistance of materials. |
| It runs into unsurmountable conflicts between the political project to which it is committed and the lures of its Gothic aesthetics. |
| Furthermore, the obstacles in the way of this development are by no means unsurmountable. |
| Her actions have brought unsurmountable sadness and horror to those who survived the attack. |
| He slumped in his chair, drained by the unsurmountable odds stacked against him. |
| And all that lot beat unsurmountable odds in their fight for victory, so maybe we have a chance. |
