| 摘 要： | Technology is the application（应用） of knowledge to production. Thanks to modem technology, we have been able to increase greatly the efficiency of our work force. New machines and new methods have helped cut down time and expense while increasing overall output. This has meant more production and a higher standard of living. For most of us in America, modern technology is thought of as the reason why we can have cars and television sets. However, technology has also increased the amount of food available（有用的） to us, by means of modern farming machinery and animal breeding techniques, and has extended our life span via（通过） medical technology.
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