提前履约的中文解释

指证券或期权在到期日之前行使权利。美式期权可在到期前任何时候履约，欧式期权则只能在到期日履约。

Early Exercise的英文解释

When a security or option is exercised before its due maturity date. American-style options can be exercised at any time, allowing early exercise. European-style options can be exercised only at the maturity date.

• security [si´kjuəriti]   n.安全；证券；抵押品   (初中英语单词)
• maturity [mə´tjuəriti]   n.成熟；完备   (英语四级单词)