We now turn to a different physical situation-that which we find close to the surface of the Earth.
现在我们转换到一个不同的客观环境下-一个我们发现与地球表面和接近的环境。
And is described as a physical synthesis which composed of water, soil and vegetation and the process is dominated by that of water in the surface layer of the earth.
是地球表层上由水、土和适生植被相互作用构成，其内部过程为水所控制的自然综合体。
We designate the study of the earth using physical measurements at the surface as geophysics.
我们把在地面进行物理测量研究地球的学科，称作地球物理学。
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