An overall analysis of factors influencing the safety system of metro running tunnel was carried out; a Hierarchy structure Model is set up.

较全面分析了影响地铁区间隧道安全体系的各个因素，建立了层次结构模型。

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In addition, the structural connection of underground and elevated section, and the retaining structure connection of underground running tunnel and underground station are presented.

地下区间敞开段与高架区间的结构衔接、地下区间与地下车站的围护衔接。

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Connection protocol: This protocol multiplexes the encrypted tunnel to numerous logical channels, running over the User Authentication protocol.

连接协议：该协议多路传输加密隧道到多个逻辑通道，通过用户认证协议运行。

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The hobby known as tunnel running attracts hundreds of drivers keen to show off their modified cars.

BBC: East London police to monitor tunnel running events

Since trains were running through the tunnel again only eight hours afterwards, a proper forensic investigation is unlikely.

ECONOMIST: Death, disappearance and mystery

The most elaborate, called the Leap of Faith, is a steep drop down the side of the 60-foot high Mayan Temple, and then a fast slide through a clear acrylic tunnel running through a lagoon filled with sharks.

FORBES: Found Atlantis