- 地质年代 dìzhìniándài geological eraThe sequence of periods in Earth's history based on the formation of rock layers and evolution of life; includes both relative age and absolute age determined by isotopes
- 年代学 niándàixué chronologythe science of determining and arranging the dates of past events
- 年代初 niándàichū beginning of a decadethe beginning of a decade or an age; early years of a decade
- 语言年代学 yǔyánniándàixué glottochronologythe study of the time when different languages separated based on shared vocabulary and rate of change
- 七十年代 qīshíniándài the seventiesthe 1970s; the decade from 1970 to 1979
- 都什么年代了 dōushénmeniándàile [rhetorical question]Used as a rhetorical question to express that an idea or behavior is extremely out-of-date; literally "what era are we already in?".
- 六十年代 liùshíniándài the sixtiesthe sixties; the 1960s
- 地质年代表 dìzhìniándàibiǎo geological time scale
