模仿句子：John Stumpf has once again been hauled in front of politicians in Washington to explain why the bank staff opens 2 million unauthorized bank accounts without customers being aware. 

翻译：富国银行的首席执行官John Stumpf再一次被拉到华盛顿，去对一群政治家解释富国银行的员工为何未经客户同意就擅自开立了两百万个银行帐户。