His knowledgeability impressed me.他的丰富知识给我深刻的印象....

knowledgeability的音标：knowledgeability的英式发音音标为：[ˌnɒlɪdʒə'bɪlətɪ]knowledgeability的美式发音音标为：[ˌnɒlɪdʒə'bɪlətɪ]...

n.知识丰富的，聪明的...