随着其他国家的发展，并且花更多钱来购买美国产品，贸易差额应该会拉平。
As other nations grow and spend more money on American products, the balance of trade should even out.
它们的使用也可以降低能源紧缺国家的进口开支，并改善贸易差额和国际收支。
Their use would also reduce import bills for energy-deficient countries and offer improved balance of trade and balance of payments.
美国国家统计局周三指出，美国九月份的贸易差额略降至440亿美元，该数字用于衡量一国的进出口差额。
The U.S. trade gap, which measures the difference between a nation's imports and exports, narrowed slightly to $44 billion in September, the Census Bureau reported Wednesday.
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