然而发明一种新的付费模式又被证明很复杂。

Yet finding a new payment model has proved tricky.

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事务处理模式指的是点击付款或者使用付费模式。

The Transactional model refers to the pay-per-click or fee-for-use model.

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将要建立的付费模式为了维持收入的增长，会把读者驱向那些免费媒介并且会导致访问量下降。

Erecting paywalls may drive readers toward these free outlets and sacrifice reach in exchange for maintaining revenue.

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