Attempts to charge subscription fees or set up "micropayment" schemes have failed.

收取订阅费或设立“小额支付”计划的企图也以失败而告终。

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However, this doesn't necessarily mean that all online games have to charge monthly subscription fees.

然而，这也并不意味着所有在线游戏都必须要按月收取订购费。

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The customer doesn't need to pay a large upfront licensing fee. They only need to pay recurring subscription fees.

客户只需要定期支付服务订阅费用，而不需要预先支付一大笔的使用授权费。

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But whether those will be the channels that demand subscription fees is unclear right now.

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Premium subscription fees, meanwhile, have risen from 23% to 41% of the top line.

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Unlike U.S. satellite radio services, WorldSpace doesn't charge subscription fees to most of its listeners.

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