epoch
🇺🇸
/ˈepək/
🇬🇧
/ˈiːpɒk/
a time in history when important events or changes happen
The invention of the internet began a new epoch in how people communicate.
互联网的发明开启了人们交流方式的新纪元。
a division of a longer period of time
Scientists study fossils from each geological epoch to understand Earth's history.
科学家研究每个地质时代的化石以了解地球的历史。