工业废水为水域的重要污染源，具有量大、面广、成分复杂、毒性大、不易净化、难处理等特点。

Industrial wastewater to waters of the important sources of pollution, with a large amount of wide complex composition, toxicity, difficult purification, intractable and so on.

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肉类的蛋白质不易消化的，因为肉类的蛋白质需要大量消化酵素消化，未消化的肉质会留残在肠内净化，而引发有毒物质形成。

Meat protein is difficult to digest and requires a lot of digestive enzymes. Undigested meat remaining in the intestines becomes putrefied and leads to more toxic buildup.

youdao

肉类的蛋白质不易消化的，因为肉类的蛋白质需要大量消化酵素消化，未消化的肉质会留残在肠内净化，而引发有毒物质形成。

Meat protein is difficult to digest andrequires a lot of digestive enzymes . Undigested meat remaining in theintestines becomes putrefied and leads to more toxic buildup.

youdao