buying stock on margin

例句：

1. 1. The company is offering a discount on buying stock on margin.
   该公司正在提供购买股票的折扣。
2. 2. He decided to buy stock on margin to hedge against market volatility.
   他决定用保证金购买股票来对冲市场波动。
3. 3. Many investors use margin financing to increase their investment portfolios.
   许多投资者使用保证金融资来增加他们的投资组合。