你可以看看官方网站 https://www.treasurydirect.gov/marketable-securities/understanding-pricing The price for a bond or a note may be the face value (also called par value) or may be more or less than the face value. The price depends on the yield to maturity and the interest rate. 这段下面的解释
The price for a bond or a note may be the face value (also called par value) or may be more or less than the face value. The price depends on the yield to maturity and the interest rate. 这段下面的解释