欢迎回到合肥用英语可以说"Welcome back to Hefei."

来源: 这是一个通常用来表达欢迎的短语，常见于人们回到某地，或者欢迎某人回到某地的情况。

一些英文例句及其中文翻译:

"Welcome back to Hefei. We've missed you." (欢迎回到合肥，我们一直都在想念你。)
"It's great to see you back in Hefei. How was your trip?" (真高兴看到你回到合肥了。旅行怎么样？)
"Welcome home! How was your time away?" (欢迎回家！你在外面的时间过得怎么样？)