first mortgage debenture stock

例句：

1. 1. The company's first mortgage debenture stock has been trading at a premium since its issuance.
   该公司的第一抵押贷款债券股票自发行以来一直在溢价交易。
2. 2. Investors are increasingly turning to first mortgage debenture stocks as a way to diversify their portfolios.
   投资者越来越多地转向第一抵押贷款债券股票，作为其投资组合多样化的一种方式。
3. 3.The recent market volatility has led some investors to consider first mortgage debenture stocks as a safer alternative.
   最近的市场波动使得一些投资者考虑将第一抵押贷款债券股票作为更安全的替代选择。