For example, if you think a share worth 100 will rise, you can buy a call option giving the right to buy at 100, hoping to sell this option, or to buy and resell the share at a profit.

• 例如；如果你认为价值100元的股票会上涨，你可以买一份买入选择权，授与以100元购买的权利，希望卖掉这选择权，或者购买，或者以某种利润重新卖出该股票。