跟这些亲切的冒险者们打个招呼。

Say hello to the nice adventurers.

youdao

今天早上，我想跟你打个招呼会比较好。

This morning, I thought it would be good to say hello.

youdao

我想跟他打个招呼，但忘记了他的名字。

I wanted to say hello to him but I forgot his name.

youdao

So if you haven't already, just glance at the person next to you, or say hello if you don't know them.

如果你还没有做好，那就看看你旁边的人,如果你不认识他们就跟他们打个招呼。

哈佛公开课 - 计算机科学课程节选

I have to go say hello to her.

我得去跟她打个招呼。

I will实战 - SpeakingMax英语口语达人

All right, now just to get you used to the idea, in every class we're going to have I think the same two people, so Jude is the cameraman; why don't you all wave to Jude.

还要说一下,每节课我们都会,看到这两名工作人员,裘德是摄影师,大家跟裘德打个招呼

耶鲁公开课 - 博弈论课程节选