Rivers can differ in size and there is no strict rule on how big a flow of water must be to be called as a river.
河流的流域会有不同，对于有多大的流量才能被称为河流没有严格的规定。
Recently, there has been progress towards durable water treaties for several big African river systems, such as the waters that flow down off the Lesotho highlands.
最近，一些有关非洲大型河流系统（比如流向莱索托高地的河流）的稳固的水协议正取得积极的进展。
Water flow into homes is a big challenge, even in Accra.
让水流入家庭是个严峻的挑战，即使是在阿克拉。
This paper describes the design of ash sluicing water treatment with acid and the installation of flow meter on big size ash sluicing water drain pier of reinforced concrete.
对九江电厂灰水加酸处理系统及大口径钢筋混凝土灰水排水管加装流量计等方面进行了总结。
In the jacking point, the water flow approximation, the impact force is big, can not meet the flow outside the flow, the defense is difficult.
在顶冲点，水流逼近，冲击力大，无法迎托水流外移，防守困难。
When the water content increases, the motion of small particles is obstructed evidently, and the flow rate drops greatly. But the flow rate of big wet particles rises first drops afterwards.
在研究含水量对颗粒质量流率的影响时发现：随着含水量的增加，小颗粒的运动明显受阻，质量流率大大降低，而大颗粒的质量流率会出现一个先升后降的过程。
In 1982, West pumping station began to operate, improved water cycle, the salt quantity flow out of Bositeng Lake increased, slow down the quality deteriorating of Big Lake water.
1982年西泵站投入运行后，水循环方式改善，博湖出盐量增加，缓解了大湖水质的持续恶化。
Like drinking a big glass of ice water, then use a long time to flow into tears,.
就像喝了一大杯冰水，然后用很长很长的时间流成热泪。
Like drinking a big glass of ice water, then use a long time to flow into tears,.
就像喝了一大杯冰水，然后用很长很长的时间流成热泪。
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