source water pollution
英
美
- 水源污染
双语例句
- Air and water pollution are still serious problems in many developing countries.
在很多发展中国家，空气和水源污染仍是很严重的问题。 - Pollution of the water supply reached a level pernicious to the health of the population.
水源污染已经达到危及居民健康的程度。
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