Second, if a country is advanced in science and technology, it can produce sophisticated machinery and equipment, such as computers, jet airplanes and electric generators. And this country exports them to other countries.

• 其二，如果一个国家在科技方面处于领先地位，它能生产出如电脑、喷气式飞机、发电机之类的先进机械和设备，那么它就会向别的国家出口这些商品。