剑桥词典having a system that prevents change and produces new things that are very similar to the old ones 长存不变的；陈陈相因的 The fighting between the different groups has become a self-perpetuating spiral of death and hatred . 不同社会群体之间的斗争导致了死亡与憎恨的永无止境的恶性循环。 返回 self-perpetuating