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看涨期权 - Kanzhang qiquan, rengou qiquan
一种期权，给予持有人在约定时间内以约定价格买入某一标的资产的权利。如果看涨期权的持有人选择行使权利，卖方(the seller or writer)有义务向其出售标的资产。
Call
An option that gives the holder or buyer the right but not the obligation to buy an underlying instrument at an agreed price within a specified time. The seller or writer has the obligation to sell the underlying instrument if the holder exercises the option.
