EDWARD GREEN: Hello Don. You look busy.

爱德华．格林： 你好，堂。你好忙啊。

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

And if you see her, won't you please say hello, because I don't know if I can do this alone.

NPR: Folk-Soul Singer Amos Lee in Concert

Grown-ups may deplore that youngsters don't even say hello properly, but we do so among members of our own group.

CNN: ASIANOW - TIME Asia

They don't come out and say hello.

FORBES: First Class Amazon River Cruise