求翻译：In 1979, trade between the United States and China stood at roughly $5 billion -- today it tops over $400 billion each year. The commerce affects our people's lives in so many ways. America imports from China many of the computer parts we use, the clothes we wear; and we export to China machinery that helps power your industry. This trade could create even more jobs on both sides of the Pacific, while allowing our people to enjoy a better quality of life. And as demand becomes more balanced, it can lead to even broader prosperity.是什么意思？

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