The chief source of uncertainty, though, is on the supply side-in particular, the troubled outlook for a host of planned new plants in Asia.
然而，不确定的主要来源在供应这边，特别的，亚洲大量计划的新工厂的困难前景。
In the Middle Ages, Arabs brought cinnamon and other spices from Asia to Egypt on caravan trade routes. They concocted stories to hide the source of the cinnamon to justify its scarcity and cost.
中世纪，阿拉伯商旅将肉桂和其他亚洲香料带至埃及，他们编造一些故事用来隐瞒肉桂的来源，让人们无法辨明它的稀缺状况和实际价值。
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