Install a flush toilet with small pondage.

安装一个贮量小马桶。

This research discovered that soil pondage of level terrace were less than fallow sloping filed because of crops’ absorbing and using, and evaporation.

现由于作物对梯土壤分吸收利用，以散原因，导致平梯土壤贮量比休闲坡地小。