这样若埋在管子内的线出了问题时，即可打开可开启式门，来检修线路，十分方便。
If the wire embedded in the tube goes wrong, the maintenance of the line can be carried on by opening the openable door, which is very convenient.
当崔门在检查管子上的缺口和那把石锤时，一只老鼠就从管子里跳了出来，崔门后来发誓那只老鼠跟一头小猎犬一样大。
It must have been damn near unspeakable. A rat jumped out of the pipe as Tremont was examining the hole and the rock-hammer, and he swore later that it was nearly as big as a cocker spaniel pup.
当崔门在检查管子上的缺口和那把石锤时，一只老鼠就从管子里跳了出来，崔门后来发誓那只老鼠跟一头小猎犬一样大。
It must have been damn near unspeakable. A rat jumped out of the pipe as Tremont was examining the hole and the rock-hammer, and he swore later that it was nearly as big as a cocker spaniel pup.
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