严峻考验用英语怎么说？

严峻考验

例句

• The marathon is a severe test of stamina. 马拉松赛跑是对耐力的严峻考验
• The youths were initiated into manhood by the most frightful ordeals imaginable. 青年人要经受难以想像的严峻考验才能被承认进入成年期.
• These islands were a crucible of exploration and development. 这些岛屿是对开发和发展的严峻考验.
• The alliance had been forged in the crucible of war. 这个联盟经受了战争的严峻考验.
• ...a system in which ideas are tested in the crucible of party contention... 各种观点得以在党派纷争的严峻考验中得到检验的体系