为试验和过程，设备，基础化学品的资格认可做实验。
Tests for trials and qualification of processes, equipment, base chemical.
在20世纪40年代早期，农民们沐浴在以化学品为基础的集约农业的光辉下，贪心地把杀虫剂当作增加作物产量的一种可靠方法。
In the early 1940s, basking in the glory of chemical-based intensive agriculture, the farmers avidly took to pesticides as a sure measure to boost crop yield.
在这项工作中，我们还必须加倍努力，防止供应前体化学品，因为此类化学品是很多非法药物的基础。
This work must also include redoubling efforts to prevent the supply of the precursor chemicals that are the foundation of so many illicit drugs.
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