剑桥词典having a system that prevents change and produces new things that are very similar to the old ones 長存不變的；陳陳相因的 The fighting between the different groups has become a self-perpetuating spiral of death and hatred . 不同社會群躰之間的鬭爭導致了死亡與憎恨的永無止境的惡性循環。 返回 self-perpetuating