fortuitously

Fortuitously, I found my lost keys under the sofa.

用法提示：副词“fortuitously”修饰整个句子，表示一种幸运的偶然发现。

She fortuitously met her old friend at the airport.

用法提示：副词“fortuitously”强调相遇的意外性和幸运性。

The rain stopped fortuitously just as we stepped outside.

用法提示：副词“fortuitously”描述雨停的时间恰好有利。