bonds authorized and unissued

例句：

1. 1. The company issued bonds to raise funds for its expansion plans.
   该公司发行债券以筹集资金用于其扩张计划。
2. 2. The bond market is highly volatile, with prices fluctuating daily.
   债券市场波动性极高，价格每天波动。
3. 3. The government has been negotiating with the bondholders to settle their debts.
   政府一直在与债券持有人协商，以解决他们的债务问题。