打招呼：表示问候或寒暄的常用语。
"Say Hello" is a 2005 single by the house music duo Deep Dish. It was originally included on the group's 2005 album, George Is On.
say hello(打招呼)： 师：今天我们班上来了好多客人，小朋友们应该和客人说什么呀？
下次见到李红时请代我向她问好(say hello to)翻译
我正准备蹲下来跟它say hello（说你好）的时候，它就又被另一个海浪冲走了。哎，我们的相遇是短暂的，却是美好难忘的.
生命不可承受之轻 （ say hello ）这首歌有100人因听了它而自杀..
Please say hello to everybody.
请向大家问好。
He popped in to say hello.
他突然出现说了声你好。
Pupils say hello to their teacher.
学生们向老师问好。
And see? I'm close enough to say, 'Hello, good looking!'" Actress Betty Furness was commercial spokeswoman for Westinghouse.
VOA : special.2011.07.21
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。
计算机科学课程节选 : 哈佛公开课
But I think the more you meet people, here it's, the more you say hello, the more it's familiar.
但我想，你见的人越多，你说的“你好”越多，你就会越发熟悉这一切的。
SpeakingMax英语口语达人 : 和纽约的留学生
"Hello" and "Say You,Say Me." Three years ago, he turned to some popular hip-hop producers to update his sound for his "Coming Home" album.
VOA : standard.2009.06.24
Some asked him to say hello for them to others who have moved on.
I'm talking to the members of the NRA right now, would you like to say hello?
If the patients were able to interact, she would say hello to them in their beds.
"say hello"是个多义词，它可以指say hello（飞儿乐团演唱歌曲）,say hello（DIA正规一辑《DoItAmazing》收录曲）,say hello（Rosie Thomas,Sufjan Stevens演唱的歌曲）。