If they then rise in price, the buyer will exercise the option to purchase them at the below-market value.

如果价格上涨，买方将行使选择权以低于市场的价格购买它们。

Sinopharm will provide 60 million doses of its vaccine to COVAX between July and October 2021, with the option to purchase more jabs later in the year.

国药集团将在今年7月至10月向新冠肺炎疫苗实施计划提供6000万剂疫苗，并可选择在今年晚些时候提供更多采购疫苗。