AA: 这是一篇来自某个电话制造商的报告，说制作电话的流程中有一些金属，such as xxxxxxx，非常贵，且最近十年这些金属的价格忽高忽低，so ,a cell phone company , should lock in the cost by buying the expensive metals for continued growth of the division and high-volume of purchasing.
AI:the fossil fuels resources are both vital and limited, international agreements should adopted that all countries reduce the dependence of the fossil fues.
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发表于 2011-6-30 00:12:37
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