It is a new Angle to study problems in teaching and learning from the ecological perspective.
从生态学的角度研究教学问题是一个新的视角。
This paper probes into the location condition for propagating the culture of the Yangtze River from the Angle of natural ecological environment.
从自然生态环境角度，探讨了长江文化繁衍的区位条件。
This paper focuses on ecological refugee, its development and formation causes which analyses all-round from the geographical environment Angle.
本文从地理环境的角度综合分析了生态难民形成的原因。
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