2 sentences

1. 这场内战持续了多年。

   zhè cháng nèi​zhàn chí​xù le duō nián.

   This civil war lasted for years.

   Source: Dong Chinese Dictionary

2. 苏维埃政权在内战中存续了下来。

   Sū​wéi'āi zhèng​quán zài nèi​zhàn zhōng cún​xù le xià​lai.

   The Soviet regime survived the civil war.

   Source: Dong Chinese Dictionary