求翻译：“In my brief existence, a once-in-a-century solar eclipse has happened twice, a once-in-500-year flood has happened ten times, and a once-in-a-millennium earthquake has happened twice. The only thing that hasn’t happened is a once-every-five-year general election.”是什么意思？

“在我短暂的存在，曾经在一个世纪的日食发生了两次，一次在500年的洪水发生了10次，一次在一个千年的地震已经发生了两次。还没有发生的唯一一次每5年换届选举。“

The "In my brief existence, and a once-in-a-century solar eclipse has happened twice, and a once-in-500-year flood has happened ten times, and a once-in-a-millennium earthquake has happened only twice, The ' thing that hasn t happened is a once-every-five-year general election."

“In my brief existence, a once-in-a-century solar eclipse has happened twice, a once-in-500-year flood has happened ten times, and a once-in-a-millennium earthquake has happened twice. The only thing that hasn' t happened is a once-every-five-year general election.”

“In my brief existence, a once-in-a-century solar eclipse has happened twice, a once-in-500-year flood has happened ten times, and a once-in-a-millennium earthquake has happened twice. The only thing that hasn’t happened is a once-every-five-year general election.”

正在翻译，请等待...