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.
網際網路的發明開啟了人們交流方式的新紀元。
a division of a longer period of time
Scientists study fossils from each geological epoch to understand Earth's history.
科學家研究每個地質時代的化石以了解地球的歷史。