它是非常秘密的，以至于大部分当地人肯定这个场所就仅仅是一个电话站。

It was so secret, that most of the local people were sure the object was just a telephone station.

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小镇自身于1957年关闭了。它是非常秘密的，以至于大部分当地人肯定这个场所就仅仅是一个电话站。

The town itself became closed in the year 1957. It was so secret, that most of the local people were sure the object was just a telephone station.

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防爆挠线连接管用于防爆电话站、防爆接线箱、防爆扬声器的输入，输出口到布线钢管之间的过渡连接，起到保护电缆的作用。

Explosion-proof flexible connecting pipes is used in explosion-proof telephone station, explosion-proof terminal, explosion-proof loud-speaker inlet or outlet to conduit and protect the cable.

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