But under basel iii , it may be difficult for some banks to retain very low ratios of risk-weighted assets ( rwa ) to total assets , as there will be tougher assessments of credit , market and counterparty risk .

但是根据巴塞尔协议iii的规定，对一些银行保留非常低的风险权重资产占总资产的比率是很困难的，因为这对信用，市场和交易对手风险的评估变得很难。