[] () a right to buy sth, such as a number of shares in a company or a quantity of raw materials, at a particular price within a fixed period or on a particular date 购买期权，购买选择权，看涨期权（在规定期限内或特定日期按标定价格购买一定数目的股票或原材料等的权利）◆a call option to purchase 10 000 pounds of sugar at $0.50 per pound 按每磅 0.50 美元购买 1 万磅食糖的购买期权➡put option ⨁to buy / exercise / hold / purchase / use a call option 买入／行使／持有／购入／运用购买选择权