这种新兴技术的难点就是成本，即使太阳能板的价格大幅下跌，随之而来的问题就是稀有材料太阳级多晶硅在全球供不应求。
One problem for the emerging technology is cost, even in the aftermath of a sharp fall in solar panel prices, following a global glut of the main raw material, solar-grade silicon.
因此，随着时间的推移，全球电子材料和元器件市场将供不应求。
Thus, over time, the global electronic materials and components market will be in short supply.
然而，研究人员后来在中国八角中发现了制造达菲的物质——莽草酸，导致这种材料供不应求。
The substance used to make the drug, shikimic acid, is found in Chinese star anise and was in short supply.
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