The synchronic differences of languages usually indicates the diachronic evolution of the language.
语言的共时差异往往反映历时的演变。
Synchronic differences in language often reflect the diachronic evolution, so do the endangered languages.
语言的共时差异往往反映历时的演变，濒危语言也是一样。
In the diachronic evolution of civil subjects, three phases including ancient times, modern times and contemporary times, can be divided in theory.
在历时态的民事主体演进中，理论上可以区分为古代、近代和现代三个阶段。
In the diachronic evolution of civil subjects, three phases including ancient times, modern times and contemporary times, can be divided in theory.
在历时态的民事主体演进中，理论上可以区分为古代、近代和现代三个阶段。
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