survival of the fittest

指在竞争中优秀者取胜，并保存下来发展，差劣者则被淘汰knockout system

• 应该用艺术竞争、优胜劣汰的方法，来考核评定艺术表演团体的级别。

  The method of artistic competition and the knockout system should be used to examine and assess the level of artistic performance troupes.

• 企业根据国家的法律和政策，自主经营、在竞争中优胜劣汰。

  Enterprises operate autonomously in accordance with the state's laws and policies, and only the fittest survive the competition.