periodicals的精選

兩個詞語都是專業期刊的意思specializedperiodicals，更具專門的針對性是專門做某個領域的或者某個行業的期刊報到而professionaljournals稍微廣泛些&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbs...