n.永世，无数的年代，极长时期

Eon is the term used to describe an extremely long period of time, often in geological or astronomical contexts.
一亿年是用于描述极其漫长的时间段，通常在地质学或天文学中使用。
The Earth has existed for around 4.5 eons, with the first life forms emerging around 3.5 billion years ago.
地球存在了大约45亿年，最早的生物形式大约在35亿年前出现。
The universe is estimated to be around 13.8 eons old, based on current scientific understanding.
根据当前科学理解，宇宙大约有138亿年的历史。
In mythology, an eon can represent a mythical age or epoch, often associated with great change or transformation.
在神话中，一纪元可能代表一个神话时代的阶段，常常与巨大的变化或转化相关。
Some scientists believe that another eon might pass before humans reach the next level of technological advancement.
一些科学家认为，在人类达到下一个技术进步阶段之前，可能还需要经历一个纪元。
Geologists divide Earth's history into different eons, each marked by distinct characteristics in the fossil record.
地质学家将地球的历史划分为不同的纪元，每个纪元都有独特的化石记录特征。
The concept of an eon is so vast that it challenges our comprehension of time and space.
一纪元的概念如此之大，以至于它挑战了我们对时间和空间的理解。
The evolution of species across multiple eons has led to the incredible biodiversity we see today.
跨多个纪元的物种进化导致了我们今天看到的惊人生物多样性。
Scientists are still uncovering new knowledge about the eon-long history of life on Earth.
科学家们仍在揭示地球上生命长达数亿年的历史新知识。
An eon of silence followed the catastrophic event, as the world struggled to recover.
灾难发生后，世界陷入了漫长的寂静，直到开始恢复。