... 斜交隧道门skew portal; inclined portal 明洞opencut tunnel 棚洞tunnel shed; hangar tunnel ...
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These opencut, containing shed-tunnel and opencut in the shape of arch, were often destroyed in the earthquake disaster, and makes more difficulties for the disaster relief officials.
在地震时常常引起这些明洞（拱形明洞或棚洞）的破坏，给抗震救灾工作造成极大的困难。
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