zhǔ chí rén / qǐng / zhuān jiā / xiān / huí dá / kòu yìng / tīng zhòng / tí chū / de / jǐ gè / wèn tí主持人请专家先回答叩应听众提出的几个问题。The host asked the expert to answer several questions raised by listeners who called in.