美联储的计划可能使美元贬值，让卡特彼勒公司和波音公司等出口型企业获益匪浅。
The Fed's program will likely weaken the value of the dollar, which would benefit large companies like Caterpillar Inc. and Boeing that rely on exports.
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.
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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