Sentence examples similar to has proven unattainable from inspiring English sources
For most, it has proved unattainable.
The creation of the unified force, announced by Egyptian President Abdel Fattah Sisi, has long been an ambition of the 22-member Arab League, but one that had proved unattainable.
So far, wide-scale implementation has proven to be unattainable for any of the tested DC-based vaccines.
Determining the shape of dose response curves in the low-dose region to assess evidence for thresholds based on statistical analyses has proven difficult experimentally and unattainable theoretically.
A shot at silverware "at home" has proved an unattainable desire but with Dardai in charge, nothing seems quite impossible right now.
The reborn MMV-microarray technology has proven to be highly efficient and cost-effective (with approximately 100-fold cost reduction) and enables us to realize hitherto unattainable technologies.
This has proven controversial.
ITER has proven otherwise.
