作为电子商务的一种形式，网络书店从其本质上来说具有很强的代表性和典型性。

As a form of e-commerce, the net bookstore is representative and typical in essence.

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网上拍卖已成为电子商务的一种主要形式。

Internet auctions has become a major form of electronic commerce.

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网上拍卖已成为电子商务的一种主要形式。

Internet auctions has become a major form of electronic commerce.

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