Call option refers to the right given to the option holder to buy (not the liability to buy) an asset at a specified price within specific time period.
买方期权，是指赋予期权持有人在期权有效期内按履约价格买进(但不负有必须买进的义务)规定的资产的权利。
The act of an option holder in electing not to exercise or offset an option.
指期权的持有者选择放弃执行或对冲期权合约的行为。
Putt option refers to the right given to the option holder to sell (not the liability to sell) an asset at a specified price within specific time period.
卖方期权，是指期权持有人在期权有效期内按履约价格卖出（但不负有必须卖出的责任）规定的资产的权利。 。
Putt option refers to the right given to the option holder to sell (not the liability to sell) an asset at a specified price within specific time period.
卖方期权，是指期权持有人在期权有效期内按履约价格卖出（但不负有必须卖出的责任）规定的资产的权利。 。
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