Its logical reasoning cannot be gainsaid.合乎逻辑的推理是不容否定的....

v.否认，反驳( gainsay的过去式和过去分词 )...

gainsaid的音标：gainsaid的英式发音音标为：[ˌgeɪn'sed]gainsaid的美式发音音标为：[ˌɡeɪn'sed]...