眼前的这场危机肇始于房地产泡沫的破裂，继而引发了广泛的抵押贷款违约，给许多金融机构造成巨大的损失。
The current crisis started with a burst housing bubble, which led to widespread mortgage defaults, and hence to large losses at many financial institutions.
水力破裂作用的成因主要与布达特群岩性组合特征、构造-流体作用有关。
The hydrofracturing of Budate Group is mainly related to frequent lithologic characters, tectonism and fluidization.
在主孔2000米之内，存在复杂的脆性破裂系统和构造应力场。
There exist a complex brittle fracture system and a tectonic stress field within 2000 m of the main hole.
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