Before S 4 , Livingston was down every day due to logging next door.

在S4之前列文斯顿总是由于记录到附近干扰而每天停机.

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S 4 the user uses the identification key to encrypt the relative information, enterthe service application process.

以及,S4.用户通过使用业务认证鉴权密钥加密业务使用相关信息, 进入使用业务流程.

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