就像物理的浪费和垃圾，有害的和没用的数据会降低性能和存储能力，并且要求昂贵的处理能力，从而污染了我们的数字环境。
Like physical waste and trash, unwanted and unused data also pollutes the digital environment by degrading the performance and capacity of storage systems and requiring costly disposal.
因为众多的人口和大量的垃圾污染了空气，所以（城市）环境是很可怕的。
The environment is awful because the population is too large and too much rubbish make the air unfresh.
在我们生活中常常可以听到人们抱怨：太糟糕了周围的环境，空气污染严重，水质差，灰尘满天，垃圾随处可见。
In our lives can often hear people complain about: too bad the surrounding environment, air pollution is serious, poor water quality, dust all over the sky, garbage everywhere.
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