their growing complexity
它们日益增长的复杂性
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Banks were slow to refine their approach, even as growing market complexity led some of the risks to become interchangeable.
正值市场日益增长的复杂性使得某些风险之间可以相互转换之时，银行在先前这种风险分类法的完善化上却应对迟钝。
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