清末文论家刘熙载在其《艺概·词曲概》中说:“词之妙全在衬跌。如文文山《满江红·和王夫人》云:‘世态便如翻复雨,妾身无是分明月。’《酹江月·和友人驿中言别》云:‘镜里朱颜都变尽,只有丹心难灭。’每二句若非上句,则下句之声情不出矣。”所谓“衬跌”,就是上下句意互相映 Liu Xizai, a literary critic in the late Qing dynasty, said in his book, “Allusions and Songs,” that “all the wonderful words are lined up,” such as Wen Wenshan “Man Jiang Hong and Mrs. Wang” said: Fenmei month. “” Qiu River and Friends of the station made a farewell “cloud: ’In the mirror Zhu Yen have changed, only Danxin quench.’ If every sentence on the sentence, then the next sentence of the sentiment does not carry on. The so-called ”lined up," is the meaning of each other from top to bottom