For example, a pond in hilly country that maintains a steady water level all through a dry summer in spite of having no streams flowing into it must obviously be seepage dominated.
例如,在丘陵地区的一个池塘,尽管没有小溪流入但在整个干燥的夏季保持稳定的水位,显然一定是以渗流为主。
"Fish have a refuge in the streams and can expand into the lagoons when the lake is low and the lagoons are separate," Harper said.
“鱼在溪流中有一个避难所,当湖处在低处且泻湖分开时,它们可以扩张进入泻湖。”哈珀说。
Anyway, who would want to fire streams of rockets in a populated area?
不管怎样,谁会想在人口稠密的地区发射火箭呢?
It says in some places, a majority of displaced people get their water from rivers, lakes or streams and this is posing a major health risk.
VOA: standard.2009.09.20
She remembers that she did. "I think like many of the children in our world, I got interested in science just from having a butterfly net and from having a few strainers and some boots and going down to the streams and creeks and being out in the fields."
VOA: standard.2010.03.29
应用推荐