使用包封方法形成农学活性物质的安全递送系统。
A safe delivery system of agriculturally active material is formed using an encapsulation process.
在某些情况下，我们已列出了含有类似价值的维生素和矿物质的安全替代品。
In some cases, we \ 've listed safer alternatives that contain similar valuable vitamins and minerals.
但市场上还有成千上万种化学物质，而对这些物质的安全性却很少、甚至从来没有进行过检查。
"But there are tens of thousands of chemicals on the market for which there has been little or no safety testing," she said.
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