"Our forefathers had been mining for mercury since the Ming Dynasty [1368-1644] and in olden days there was no pollution from such small mines," said a 72-year-old farmer, named Shen.
“我们的先辈从明朝时(公元1368- 1644年)就开始开采水银了，在往日这么小的矿并没有污染，”一位72岁的沈姓农民这样说。
“Our forefathers had been mining for mercury since the Ming Dynasty [1368-1644] and in olden days there was no pollution from such small mines, ” said a 72-year-old farmer, named Shen.
“我们的先辈从明朝时（公元1368-1644年）就开始开采水银了，在往日这么小的矿并没有污染，”一位72岁的沈姓农民这样说。
There was a growing sense in the 70s that a range of environmental factors - be it pollution, pesticides, food additives, man-made cancers - meant that we were no longer in control of our bodies.
污染、农药、食品添加剂、人为致癌等一系列环境因素意味着我们失去了对自己身体的控制。这种意识人们在七十年代日益增多。
There was no significant difference of rice grain yields between the treatments of straw mulching and plastic film covering but the cost and soil pollution in the latter should be concerned.
覆膜处理虽在产量和水分利用效率上略高于盖草处理，但差异不显著，且覆膜处理存在成本高，污染土壤等缺陷。
There were no apparent different effects between using ferrous sulfate and using ferrous ammonium sulfate, the former was much cheaper and no secondary pollution.
用硫酸亚铁的效果与用硫酸亚铁胺的效果相差不大，且前者价格便宜，使用中不会造成二次污染；
Compared with sole Cu pollution, under Cu-pyrene combined pollution, there was no obvious difference in physiology and biochemistry of ryegrass.
铜-芘复合污染与铜单-污染相比，黑麦草生理生化性质并无明显差异。
Compared with sole Cu pollution, under Cu-pyrene combined pollution, there was no obvious difference in physiology and biochemistry of ryegrass.
铜-芘复合污染与铜单-污染相比，黑麦草生理生化性质并无明显差异。
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