As a kind of important active substance, fagaramide is the main component that tastes numb.
2
由于本发明者所能查阅的资料有限，还不能回答是否有人曾提出过人造土壤的问题，所以暂称本发明为首创。
Due to the limited technological literatures I can search, I can not ensure if artificial soil has ever been proposed in the world, then I can say that it is the first invention temporarily.
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