Maybe I am childish, maybe I am ramstam, but I do believe something beautiful and innocent, believe that in our heart there is a holy land that we cannot be polluted but only look with reverence.
也许我就是很幼稚，很固执，可是我就是相信美好而且纯真的事情相信在我们的心中总有一块圣洁的土地不能去污染，只能去仰望。
So the effect of organic matter on phosphorus release cannot be neglected, especially for the heavily polluted sediments.
因此不能忽视有机质对磷释放的影响，尤其是重污染的沉积物磷释放。
Fresh air of natural ventilation comes directly from outdoor and cannot be re-polluted so it's effective to improve the indoor air quality.
自然通风直接来自室外，不会受到二次污染，对改善室内空气品质非常有效。
Fresh air of natural ventilation comes directly from outdoor and cannot be re-polluted so it's effective to improve the indoor air quality.
自然通风直接来自室外，不会受到二次污染，对改善室内空气品质非常有效。
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