Call是指买权,put是指卖权,两种期权又分别对应了long和short的两种操作,即买入和卖出两种操作。 1、买入call(long call):买入 看涨期权 买入call可以使投资者以固定费用获得到期前用预定价格. 总的来说,这三个短语虽然都用于总结,但in short和in a word偏向于简洁,适合快速概要,而in conclusion和in summary则更倾向于对整个讨论的深入总结,强调对内容的提炼和归纳.
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