We can save water.Don't wash our hands under a running tap(合并一句）在线等
问题描述：
We can save water.Don't wash our hands under a running tap(合并一句）
在线等
答
We can save water if we don't wash our hands under a running tap.
答
Don't wash our hands under a running tap in order to save water.
答
We can save water by not washing our hands under a running tap.