When valve is filled, open the downstream shutoff slowly and fill the water supply system.
阀门注满后，慢慢开启下游关闭阀对水供应系统注水。
Downstream countries cannot guarantee getting enough clean water to consume for themselves.
下游国家不能确保自己得到足够的干净用水。
But the river water still carried him in its grip swiftly downstream.
可是河水抓着他仍然向下飞流。
Downstream of the upstream water too much, cause water shortage, block;
上游未经处理排出的废污水，造成下游河道污染；
Downstream of the upstream water too much, cause water shortage, block;
上游未经处理排出的废污水，造成下游河道污染；
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