绿洲外缘地区，是绿洲与荒漠相互转化活动程度最剧烈、表现最突出的地区，而植被是生态系统的重要组成部分和景观状况的重要指针。

The outer space of oasis play a great role in transferring between oasis and desert, of all, vegetation is a important part in ecological system and index displaying the certain landscape.

youdao

绿洲外缘地区是绿洲与荒漠相互转化活动程度最剧烈、表现最突出的地区，而植被是生态系统的重要组成部分和景观状况的重要指标。

The outer space of oasis plays an important role in transferring between oasis and desert. Vegetation is an important part in ecological system and indicating certain landscapes.

youdao

新模型系统地论述了差异影响下个体城市自中心向外缘扩展的微观经济学机理。

The new model systematically studies the microeconomic dynamics of individual urban expansion to the margin areas under different impactions.

youdao