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。
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。
Hello, hello, what\'s going on here?
嘿，嘿，这是在干吗？
