The paper, by Jens Franzen of the Senckenburg Research Institute in Frankfurt and his colleagues, is the usual, measured analysis expected of such work.

• 这篇由法兰克福新垦包研究学会的延弗瑞赛及其同事完成的文章，是那种很规范的分析报告，秉承了此类研究报告的一贯形式。