“嗨，你们好！”那妇人朝他们笑着招呼道。—“你好！”他们齐声回答。

"Hello there," said the woman, smiling at them.—"Hi!" they chorused.

《柯林斯英汉双解大词典》

嗨，大家好，你们猜猜我从事的是什么工作？

Hi, everybody, you can guess what kind of job I do.

youdao

嗨，大家好，现在我想给你们做一个自我介绍。

Hello, everyone, now I want to give you a introduction about myself.

youdao