你好的英文是：Hello。

hello：int./n.(用于问候、接电话或引起注意)哈罗，喂，你好;(表示惊讶)嘿;(认为别人说了蠢话或没有注意听)喂，嘿。

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‘ Oh, hello, ’ he said, with a smile.

“嗨，你好。”他微笑着说。

Hello, Mr Brown.

你好，布朗先生。

Hello, it's us back again.

嘿！我们又回来了。

Hello? You didn't really mean that, did you?

嘿？你不会真是那个意思吧？

He popped his head around the door and said hello.

他从门后探一探头，打了声招呼。