However, the newer or less-common metals used in smartphones, infrared optics, and medical imaging, are vulnerable.

　　但是在相对较新的智能手机、红外光镜、医学成像等领域中使用到的、相对不常见的稀有金属反而比较危险。

　　The team's results show that the limitations for many important metals used in smartphones and other gadgets are largely those related to supply risk.

　　该团队的研究结果显示智能手机及其他小器械中使用到的许多重要金属都会因为供应危机而受到限制。

　　These include gallium used in processor chips and selenium in transistors on these chips.

　　这些金属包括数据处理芯片中使用到的镓以及这些芯片的晶体管中使用到的硒。

　　Platinum group metals including gold and mercury have the highest environmental implications.

　　而包括金、汞在内的铂类金属对环境造成的危害最大。

　　'The metals we've been using for a long time probably won't present much of a challenge,' said Professor Graedel.

　　格雷德尔教授说：“我们对已经使用了很长时间的金属反倒不用担心。”

　　'We've been using them for a long time because they're pretty abundant and they are generally widespread geographically.

　　“我们能用这么长时间就是因为它们储量丰富、地理上分布得也很广。”

　　'But some metals that have become deployed for technology only in the last 10 or 20 years are available almost entirely as byproducts.

　　“但是最近一二十年兴起的科技产业中所使用的金属几乎是作为副产品出现的。”

　　'You can't mine specifically for them; they often exist in small quantities and are used for specialty purposes. And they don't have any decent substitutes.'

　　“我们无法明确地直接对这些金属进行开采，它们储量小、用途特定，而且没有合适的替代品。”

　　The researchers listed these as indium, arsenic, thallium, antimony, silver, and selenium. There is no substitute for indium, in particular, and this could impact our touchscreens.

　　研究人员列出的这类金属名单包括：铟，砷，铊，银和硒。其中铟没有任何可以替代它的金属，而它是生产触摸屏需要用到的重要材料之一。

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（责任编辑：何莹莹）