也有很多人利用互联网销售，以补充他们的收入。

There are a lot of people who use Internet sales to supplement their income.

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当处理互联网销售时，另一个阐述其复杂性的例子就是药物领域。

Another illustration of how complicated it can become when dealing with sales over the Internet is in the area of pharmaceutical drugs.

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这些拖拉机实际上自行驱动，而司机则利用互联网销售谷物粮食。

They practically drive themselves, while the driver USES the Internet to sell corn.

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