buy back oil

例句：

1. 1.The company is buying back its shares in an effort to boost investor confidence.
   该公司正在回购其股票，以提振投资者信心。
2. 2. The government plans to buy back the bonds issued during the financial crisis.
   政府计划回购在金融危机期间发行的债券。
3. 3. The oil company has agreed to buy back some of its own oil reserves.
   这家石油公司已同意回购一些自己的石油储备。