柳儿久 作文jj

babygloria

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.