简解

◎ 留成,留成儿 liú chéng,liú chéngr
[retain a certain percentage for the unit that produces the profit；deduct a percentage (from a sum of money etc.)] 按一定成数从钱财的总数中留下来
利润留成

详解

从钱财的总数中按一定成数留下来。如：利润留成。