求翻译：大坝阻挡了淤泥流向下游，使包括上海地区在内的长江入海口收缩，海洋的咸水正在倒灌入内陆。通过大坝的水流速度目前正在加快，对下游的防洪大堤造成破坏。未经处理的污水和化肥残留物被不断排入大坝水库，导致巨型水藻生长泛滥，并威胁到下游的水供应。而水库水位的波动也被认为是湖南省农民所遭遇奇特鼠灾的根源。是什么意思？

Dam blocking the flow of silt downstream, the Yangtze River, including Shanghai area, including contraction, the ocean is salt water intrusion into inland. Rate of water flow through the dam is being accelerated, levees downstream damage. Untreated sewage and fertilizer residue is continuously disch

DAM blocked the mud flows downstream to Shanghai area, including in the mouth of the Yangtze River in the sea, the salt water is Tucheng contraction into inland. The flow rate through dam is now speeding up the downstream of the flood protection embankment, causing damage. Untreated sewage and ferti

The dam prevented the silt to flow to the downstream, caused including the Shanghai area the Yangtze River estuary contraction, the sea salty water to flow in backward into the interior.Is speeding up at present through the dam velocity of flow, creates the destruction to the downstream flood preven

Blocking silt flows downstream of the dam, including the mouth of the Yangtze River, Shanghai areas shrink, the ocean salt water was flooding into inland. The water flow velocity through the dam is currently accelerating, on downstream flood damage. Untreated sewage and fertiliser residues being dis

Blocking silt flows downstream of the dam, including the mouth of the Yangtze River, Shanghai areas shrink, the ocean salt water was flooding into inland. The water flow velocity through the dam is currently accelerating, on downstream flood damage. Untreated sewage and fertiliser residues being dis