高谈虚论[gāo tán xū lùn]
词典\u0064\u0061\u006E\u0063\u0069\u002E\u0039\u0031\u0031\u0063\u0068\u0061\u002E\u0063\u006F\u006D
词典talk high-sounding phrases：高谈虚论。
talk high-sounding phrases