亘古未有 unprecedented
Explanation
从古到今从未有过。形容事物空前绝后，极其罕见。
Never before in history. Describes something unprecedented and extremely rare.
Origin Story
话说在很久很久以前，有一个名叫小明的年轻匠人，他从小就对机械制造充满了好奇心。他废寝忘食地钻研各种机械原理，并不断进行实践创新。有一天，小明突发奇想，想要制造一台前所未有的机器，这台机器能够在短时间内完成大量的农活，从而极大地方便农民的生活。这个想法在当时可谓是亘古未有，所有人都觉得他异想天开，痴人说梦。然而小明并没有放弃，他日夜不停地工作，不断克服各种技术难关。经过数年的努力，他终于研制成功了一台神奇的机器，这台机器不仅能够自动耕地播种，还可以自动收割粮食，其效率远远超过传统的农具。小明的发明震惊了整个村庄，人们都惊叹不已。这台机器不仅极大地提高了农业生产效率，也给人们的生活带来了巨大的改变，让小明的名字传颂了千年。
Once upon a time, in a faraway land, lived a young craftsman named Xiaoming who possessed an extraordinary fascination for mechanical creations. From a young age, he dedicated himself to studying the principles of mechanics, tirelessly experimenting and innovating. One day, a revolutionary idea struck Xiaoming: to design a machine unlike any other, one capable of completing an immense amount of farm work in record time, thus significantly improving the lives of farmers. The idea was completely unprecedented, considered by many to be a mere fantasy. Undeterred, Xiaoming dedicated himself to the project, working tirelessly to overcome the many technical hurdles. After years of relentless effort, he finally succeeded in building his ingenious machine. It not only plowed and sowed automatically, but also harvested crops with unparalleled efficiency, far exceeding that of traditional tools. Xiaoming’s invention caused a sensation, leaving villagers awestruck. The machine drastically increased agricultural productivity and brought about a significant improvement in their lifestyle, ensuring Xiaoming's legacy would last for generations.
Usage
用于形容事物从古至今从未有过，表示空前绝后。
Used to describe something that has never existed from ancient times to the present, indicating something unprecedented.
Examples
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这项技术，在当时来说是亘古未有的。
zhè xiàng jìshù, zài dāngshí lái shuō shì gèngǔ wèi yǒude
This technology was unprecedented at the time.
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他取得的成就，是亘古未有的。
tā qǔdé de chéngjiù, shì gèngǔ wèi yǒude
His achievements were unprecedented