假冒药物范围很广，既有不含任何有效成分的产品，也有含剧毒物质的产品。
Counterfeit medicines range from products containing no active ingredients to those containing highly toxic substances.
二恶英是一类剧毒物质，可导致生殖和发育问题，损害免疫系统，干扰激素，还可以导致癌症。
Dioxins are highly toxic and can cause reproductive and developmental problems, damage the immune system, interfere with hormones and also cause cancer.
遗憾的是，有少量剧毒物质已经对人体造成了严重副作用。
‘The problem is that there are a few highly toxic things that unfortunately have had very severe effects on people.’
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