这些开拓者为医学研究开辟了新途径。

These ___pathfinders opened up new approaches in medical research.

这些环保先驱者正在推动全球可持续发展。

These environmental ___pathfinders are leading global sustainability efforts.

这些开拓者们在荒野中开辟了一条新的贸易路线。

The ___pathfinders carved out a new trade route through the wilderness.