mindlessness英美网络 不用心; 无头脑; 没脑子; 思想上的浑浊状态; 用脑筋COCA.39679英英释义nounthe trait of acting rashly and without prudenceSynonym:heedlessnessrashnesstotal lack of meaning or ideasSynonym:inanitysenselessnessvacuitypointlessness双语例句