除了卖出大豆或者玉米的看涨期权，可以保持在这些市场里做空看跌期权并且卖出你的小麦看涨期权。
Instead of selling bean or corn calls, stay short the puts in these markets and sell your calls in wheat.
煤炭资源采矿权具有和股票看涨期权一样的期权特性，本质上是一种按年度执行的多期看涨期权。
The coal resources mining right has the same characteristics as option, which is a multi-period call option exercised annually.
再者，我们以欧式下降敲出看涨和下降敲入看涨期权为例，讨论了标度和长期依赖性对障碍期权定价的影响程度及特征。
Furthermore, with European down-and-out and down-and-in call options as an example, we discussed the impact and characteristics of the scale and long-time dependence on the barrier options.
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