短語詞組短語doubtful of about 懷疑doubtful view about ancient history 疑古史觀be doubtful about 對(duì);疑惑的remaining doubtful about sth 半信半疑地were doubtful about 從第三段意思可知“因爲(wèi)她是一個(gè)對(duì)辳業(yè)沒有任何經(jīng)騐的大學(xué)生I am doubtful about that 我對(duì)此表示懷疑 返回 doubtful about