securities in pledge的用法和樣例：
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，抵押貸款擔保證券各有不同，財政部想要小心行事，免得為那些不值錢的資產掏出太多真金白銀。 - 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.
資產擔保證券的交易失靈導致銀行獲利套現的另一重要途徑受阻，從而加劇了銀行資金短缺的狀況。
