保险单涵盖对你房屋的意外损坏。

The insurance policy covers ___accidental damage to your home.

考古遗址是在田野中意外发现骨头后定位的。

The archeological site was located after the ___accidental discovery of bones in a field.

他们的重聚完全是一次意外事件。

Their reunion was a completely ___accidental event.