青云翻译

Severe water shortages and water pollution posed by the water crisis has become a 21st century one of the most serious problems.

Water shortage and water pollution pose serious water crisis has become a 21st century one of the most serious problems.

The water resources short and the water pollution serious constitutes the water crisis also already became one of 21st century most stern questions.

shortage of water resources and water pollution is serious water crisis posed by 21 has also become a most serious problem.

Water shortage and water pollution pose serious water crisis has become a 21st century one of the most serious problems.