Sent_en: 2zh That means everything has to be put back, said researcher at the Rift Valley Research Service in Ethiopia and a co-author of the study, Berhane Asfaw.
Sent_yy: “这意味着一切都必须往后推，”埃塞俄比亚裂谷研究服务中心的研究人员和该研究的合著者贝哈纳·阿斯夫说。