求翻译：有关物质主要指合成中间体、副产物和降解产物等有机杂质，为了避免杂质对人体的危害以及保证药物的纯度，药物有关物质的测定是必须的。是什么意思？

Related substances mainly refers to the synthetic intermediates, byproducts and degradation products and other organic impurities, in order to avoid the harm of impurities on the human body and to ensure the purity of the drug, drug-related substances determination is necessary.

The material primarily refers to synthetic intermediates, product and product and other organic debris, impurities in order to avoid the hazards to human beings, as well as assurance that the drug, drug-related material purity measurement is a must.

The related material mainly refers to the synthesis intermediate, the by-product and the degradation product and so on the organic impurities, in order to avoid the impurity to the human body the harm as well as the guarantee medicine purity, the medicine related material determination is must.

Main related substance means a byproduct of synthesis intermediates, organic impurities and degradation products, impurities in order to avoid harm to the human body and to secure the purity of drugs, drug-related substances determination is necessary.

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