无数的电影和文学作品一再提醒我们，最坚固的外围防范措施都能被具有足够决心的狱囚通过挖隧道而被冲破。
As countless films and written accounts remind us, the strongest outer defenses imaginable can be subverted by a prisoner determined enough to tunnel through to the outside world.
他们通过小山挖一隧道。
通过预测得出的结果证实了块体理论在高速公路连拱隧道超挖预测中的适用性。
The result of forecasting is consistent with the fact one. The applicability of block theory in overbreak of doubled arch tunnel is tested.
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