lowadj.低的；少的；低落的；低声的；卑劣的；低等的adv.低地；低声地；低下地；廉价地n.低水平；低价；低谷v.哞哞叫low camp内容粗俗为特征的

1. Other environmentally friendly toilets concentrate on using low water levels, or recycled water.
   其它环保卫生间侧重使用低水位或回收水。
2. This wall-like structure pools the water as it flows over the crest and drops to the lower level.
   这种象挡水墙似的结构当流过顶部时积成水塘，并在低水位时跌落。