这已引发一种危险的自我增强式螺旋下降：随着银行彼此间停止提供信用额度，隔夜借款利率已开始飙升，从而使银行更加紧张。
And that has triggered a dangerously self-reinforcing downward spiral : as banks stop extending credit lines to one another , overnight borrowing rates have shot up making banks even more nervous .
信用额度借款