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. Long的所有形式如下: long意思为长时间,长久地,始终。 读音:英 [lɒŋ],美 [lɑːŋ]。 释义: adj. 2、long to +v后面要跟上动词原形。long for后面要跟上动词原形:long for + sb/sth long for.
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How long 的用法一、how long的用法how long有以下两个主要意思:1.
表示多长时间,主要用来对一段时间 (如three days, four weeks 等)提问。如:a:how long did he stay here?
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