美国运通公司、卡特彼勒公司和沃尔特迪斯尼公司股价下跌幅度超过0.7%，领跌道琼斯工业平均指数。

American Express Co., Caterpillar Inc. and Walt Disney Co. lost at least 0.7 percent to lead declines in the Dow Jones Industrial Average.

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本周早些时候，包括美国铝业、卡特彼勒公司和杜邦公司等10家企业联合要求国会尽快建立温室气体配额交易制。

Earlier this week ten companies, including Alcoa, Caterpillar and DuPont, called for Congress to set up a cap-and-trade system for greenhouse gases as quickly as possible.

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自从8月以来，美元汇率下跌抑制有助于推动股价上涨，主要是因为卡特彼勒公司和波音公司等美国出口企业会从中获益。

A falling dollar has helped push stock prices up since August because it benefits large American exporters like Caterpillar Inc. and Boeing Co.

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