肾结石通常由钙质形成，测试表明我血液中的钙含量严重超标。
Kidney stones are most often formed from calcium - indeed, tests showed the levels of calcium in my blood were far higher than normal.
压裂返排液的主要成分是羟丙基胍胶及其它的有机添加剂，具有COD严重超标的污染特征。
Hydroxypropylguar gum and other organic additives are the predominant components of fracturing fluid recovery, which have excessive CODCr, the most important polluting characteristic of the sewage.
之后，本文通过水质分析对成都市的生态系统进行了研究，实测数据显示成都市污染物排放严重超标。
This study also researches the ecological system of Chengdu city. The history data shows that the pollution emission of Chengdu is over the limit badly.
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