as the occasion demands
... as the occasion demands 应运; 应运 biochemical oxygen demand 生化需氧量 biological oxygen demand 生物耗氧量 ...
to conform with destiny
... 土壤运移过程 soil transport processes 应运 as the occasion demands; to conform with destiny 原条采运 tree length logging ...
顺应期运;顺应时势。 汉 荀悦 《后序》:“实天生德,应运建主。