浮动利率债券是息票利率根据一定市场利率而发生周期性变化的债券。

  zero coupon bond is a bond that is issued and sold at a discount, pays no interest and provides payment of the face value at maturity. this type of bond is rare, as the entire risk to investors is concentrated at the maturity date where the principal bes payable.

  零息债券是打折出售的到期不支付利息只支付面值的债券。这种债券很少见，因为投资者的全部风险都集中在债券到期日，即付本金的时候。