Gender difference is a very important issue in the study of scientific literacy.
科学素养中的性别差异问题，是科学素养研究的一个非常重要的问题。
The profit of the investors is the difference between the issue and redemption prices.
也可理解为贴现发行，投资人的利润来源为债券面值与发行价的差额。
The profit of the investors is the difference between the issue and redemption prices.
也可理解为贴现发行，投资人的利润来源为债券面值与发行价的差额。
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