你好再见用英语怎么说

"你好再见" in English can be translated as "hello and goodbye".

This is a common expression used in both Mandarin Chinese and English to greet someone and say goodbye to them in one phrase.

Here are some example sentences in English with their Chinese translations:

"Hello and goodbye, it was nice to meet you."
(你好再见，很高兴见到你。)
"I have to go now, hello and goodbye."
(我现在必须走了，你好再见。)

This phrase has its origins in traditional Chinese culture, where it was customary to greet someone before leaving their presence. Over time, this phrase has become common in other cultures as well.