adj.划时代的，开创新纪元的

The Earth's climate has undergone several epochal changes throughout its history.
地球历史上经历过几次划时代的气候变化。
The invention of the printing press was an epochal moment in human history.
印刷机的发明是人类历史上的一个划时代时刻。
His discovery marked the beginning of an epochal shift in our understanding of the universe.
他的发现标志着我们对宇宙理解的一个重大转折点。
After World War II, globalization entered an epochal phase with unprecedented speed.
二战后，全球化进入了一个前所未有的快速转变阶段。
The Industrial Revolution was an epochal turning point in human civilization.
工业革命是人类文明的一个重大转折点。
The rise of digital technology has been an epochal change in the way we live and work.
数字技术的兴起改变了我们的生活方式和工作方式。
His epochal artwork has left an indelible mark on the art world.
他的划时代艺术作品在艺术界留下了不可磨灭的印记。
The discovery of penicillin was an epochal medical breakthrough.
青霉素的发现是一个医学上的重大突破。
The advent of space exploration marked an epochal leap for humanity.
太空探索的开始标志着人类的一大飞跃。
The fall of the Berlin Wall signified the end of an epochal era in world politics.
柏林墙的倒塌象征着世界政治史上的一个划时代结束。