但是核能成本过高，而且还有核物质废料如何处理或回收的问题。
But nuclear power has staggering capital costs, and brings the controversial question of how to dispose of or recycle nuclear waste.
研究人员接着仔细观察了200多种可能出现的垃圾处理情形，并将垃圾废料回收的效应与其燃烧或填埋的效应做了对比分析。
The researchers then looked at more than 200 scenarios, comparing the impact of recycling with that of burying or burning particular types of waste material.
回收公司、精炼公司收集或购买上吨的电子垃圾和工业废料。然后利用化学反应分离不同的金属。
Recycling or refining companies either collect or purchase tons of this e-waste and industrial scraps. They then use chemical processes to separate the various metals.
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