However,it is not that simple. Randy Frost is a psychologist at Smith College in the American state of Massachusetts.
VOA: special.2011.02.22
Not on the basis of simple filling in ascending order, but a modified rate of filling as according to the Aufbau Principle.
并不是以简单的升值分布为基础,而是一个修改的填充方法,根据构造原理得到的填充法。
It's the most simple-- or often called a bill-- a discount bond does not pay interest; it's sold at a discount.
它是最简单的,经常被称为国库券,它是一种贴现债券,且不付息,并以折扣价发行
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