measure word · a single step in natural descent or a stage in succession

这一代年轻人很有创造力。

verb, time word, measure word · to be a substitute for, to replace, or to act on behalf of someone

如果他没空，我代他去开会。

time word, verb, measure word, noun · a historical period, dynasty, or geological eon

唐代是中国诗歌的黄金时代。