高收益债券通常在期限过半时不可赎回；
High Yield bonds are usually non-callable for about half of life of the bond;
随着股票价格降低，他们将以房地产投机抢购不可赎回财产的方式进行并购。
With stock prices low, they're going to snap up acquisitions the way real estate speculators have been snapping up foreclosed property.
对于国债期货，任何距最近的赎回日或到期日（假如不可赎回）长达至少15年的国债可用于交割。
For the T-bond contract, any Treasure bond that has at least 15 years to the nearest call date or to maturity (if non-callable) can be used for delivery.
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