STUDY ON THE RELATIONSHIP BETWEEN THE VEGETATION CHANGE AND THE HUMAN ACTIVITIES IN THE GANSU-QINGHAI REGION DURING THE PERIOD FROM MID-TO LATE-HOLOCENE是什么意思_STUDY ON THE RELATIONSHIP BETWEEN THE VEGETATION CHANGE AND THE HUMAN ACTIVITIES IN THE GANSU-QINGHAI REGION DURING THE PERIOD FROM MID-TO LATE-HOLOCENE在线翻译_英语_读音_用法_例句