She said the findings opened "a fruitful area for further investigation," but needed larger trials.
"He moved it into a much more intellectually fruitful area."
But Zouga had exhausted the digging below the tower, and this seemed to be the only fruitful area left to him.
One fruitful area to explore are those things that come and go, or move around, or change.
Some consider it a fruitful area of research.
This gap leaves a fruitful area for study.
Besides the water power potential, the area is seen as a fruitful area in the sports of fishing and bird watching.
See if you can better localize fruitful areas for excavation.
CP violation is a fruitful area of current research in particle physics.
So, we think that's a very fruitful area and we're putting our energy into the standards side of common ground station solutions.