ON THE SEQUENTIAL EXPLOITATION OF TOURISM RESOURCES IN UNDER-DEVELOPED MOUNTAIN REGIONS--A Case Study of Jiuyishan Scenic Spot in Hunan Province是什么意思_ON THE SEQUENTIAL EXPLOITATION OF TOURISM RESOURCES IN UNDER-DEVELOPED MOUNTAIN REGIONS--A Case Study of Jiuyishan Scenic Spot in Hunan Province在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句