伦敦桥要塌下来，弯曲和折断。
在过去，防震建材指的是坚固并且有弹性的材料，如钢材和木材，它们即使弯曲也不会折断。
In the past, making structures quake-resist-ant meant firm yet __5__ materials, such as steel and wood, that bend without breaking.
可见采场围岩结构的典型破坏模式以顶底板的弯曲折断破坏和矿柱沿弱面滑移破坏为主。
Can be seen surrounding rock structure of the typical pattern of damage to the roof and floor of bending damage and a broken pillar along the main damage to the weak side slip.
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