His defense, which seems credible on the evidence so far, is that the bank masked its skullduggery so completely that no regulator anywhere in the world could get a handle on it.

他辩词(根据目前证据似乎信)是：银行把它偷天换日做法遮掩得天衣无逢，全世界任何地方监管人员都无法掌握。