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单语范例（未经PONS编辑处理）
On both paths they encountered obstacles that proved to be insuperable.
en.wikipedia.org What motivates ordinary citizens to fight for justice when the odds are impossibly long, the obstacles seem insuperable and the quest drags on for years?
www.thestar.com However, after examining it carefully, it seems to me that the difficulties, while undoubtedly great, are not insuperable.
en.wikipedia.org He finished the provincial season with an insuperable batting average of 120.20 from ten innings.
en.wikipedia.org The revolutionary system proved to have insuperable technical difficulties and was abandoned.
en.wikipedia.org