This is the 3069th most frequent Chinese word.
远古
Ancient times; remote antiquity.
The term '远古' in this sentence refers to 'ancient times', specifically a period in Earth's history that is long past and predates human civilizations, emphasizing historical and prehistoric context.
远古时期，地球上的生命形态非常简单。
In ancient times, life forms on Earth were very simple.
Here, '远古' is used to describe the time period to which the organism that the fossil represents belonged—indicating its place in prehistoric times.
这块化石是远古生物的遗迹。
This fossil is a remnant of an ancient organism.
In this context, '远古' refers to legends originating from ancient times, emphasizing cultural and mythological heritage.