许多教科书都有附录，尤其是经济学教科书。这些附录提供了阅读和使用图形材料的具体信息。

Many textbooks, particularly those in economics, contain appendixes that provide specific information on reading and working with graphic material.

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疲软的经济和高价原材料证明了一个明显的事实：美国不再是这些产品的定价者了。

This combination of still-subdued activity and high raw material prices illustrates a wider truth; that America is no longer the price-setter for these products.

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首先，不同于拉丁美洲，作为原材料经净进口经济体，它将受益于商品价格骤降。

First, as a large net importer of raw materials it will benefit from the plunge in commodity prices, unlike Latin America.

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