Ideally, a large proportion of rainfall should be absorbed by the ground. Clearly, such a process is not possible on a hard surface.
大部分降雨理论上应该被地面吸收，对硬地面来说显然不行。
Ideally, a large proportion of rainfall should be absorbed by the ground. Clearly, such a process is not possible on a hard surface.
大部分降雨理论上应该被地面吸收，对硬地面来说显然不行。
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