考尔德学会了如何找到准确的点连接每根金属线，使所有的部件能够协调摆动。

Calder learnt how to find the precise point to connect each wire so that all the pieces will sway in harmony.

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总之，因为SSL使用证书身份验证，所以SSL连接的每一端都必须持有密钥存储文件中的适当密钥。

In summary, because SSL USES certificate authentication, each side of the SSL connection must possess the appropriate keys in a key store file.

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然后，您仅需要在一定间隔之后连接到后台服务器(如每三十分钟)，以刷新数据。

Then, you would only need to connect to the backend server at some interval (say, every thirty minutes) to refresh the data.

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