再见用英语高级点怎么说

"Goodbye" is a common way to say "再见" in Engpsh. Here are a few other ways you could say it in a more formal or sophisticated way:

Farewell
Adieu
So long
Take care
Until we meet again
Safe travels

You can use these phrases to bid someone farewell in a more formal or sophisticated way, depending on the context and your relationship with the person.