求翻译：多年来，中国水资源质量不断下降，水环境持续恶化，由于污染所导致的缺水和事故不断发生，不仅使工厂停产、农业减产甚至绝收，而且造成了不良的社会影响和较大的经济损失，严重地威胁了社会的可持续发展，威胁了人类的生存是什么意思？

Over the years, China declining water quality, water environment continued to deteriorate due to pollution and accidents caused by water shortages continue to occur, not only the factories closed, agricultural production or crops, and caused a negative social impact and large economic loss, a seriou

For years, China's water resources, water quality is declining environment continues to deteriorate because of pollution, and water shortages caused by accidents are occurring, and not only the plant collection, agricultural production, and even have a negative impact on society and of the large eco

For many years, the China water resources quality unceasingly has dropped, the water environment worsens continually, because pollutes lacks the water and the accident which causes occurs unceasingly, not only causes the factory to suspend production, the agricultural underproduction even gets no cr

For many years, declining water resources quality in China, water environment continued to deteriorate, due to pollution and accidents are occurring as a result of lack of water, not only the factory stopped production, agricultural production, and even have no harvest, and created the adverse socia

For many years, the Chinese water resource quality is dropping constantly, the water environment worsens continuously, because of polluting lack of water and accident caused to happen constantly, not merely make the factory stop production, the agriculture drops in production even fails in, and caus