securities in pledge的用法和样例：
例句
- Plus, not all mortgage-backed securities are alike and Treasury wants to be careful that it doesn't overpay for the truly worthless assets.
此外，抵押贷款担保证券各有不同，财政部想要小心行事，免得为那些不值钱的资产掏出太多真金白银。 - The banks' funding shortfall has been made more acute by the seizing-up of trading in asset-backed securities, closing off another vital cash-raising route.
资产担保证券的交易失灵导致银行获利套现的另一重要途径受阻，从而加剧了银行资金短缺的状况。
