Switching cost" in telecommunication service field leads to the phenomenon of "custom locked in".

电信服务领域的“转换成本”导致“顾客锁定”现象的产生。

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However, in current library service field, a set of specific and systematic service policy and system that can provide regulation and basis to library services is yet to be set up.

然而，在当前的图书馆服务领域，还没有一套明确的、系统化的服务政策与制度，为图书馆的服务活动提供管理的规范和依据。

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After China's entry into WTO, China's service field will surely be impacted by this rule.

中国“入世”后，服务领域必将受其冲击。

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After China's entry into WTO, China's service field will surely be impacted by this rule.

中国“入世”后，服务领域必将受其冲击。

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