So keep it simple: "hi", "Hey" or "Hello"—do the best you can to gather all of the enthusiasm and energy you can, put on a big smile and say "Hi".

所以简单点说：“嗨”、“嘿”或“你好”——尽你所能调动你所有的热情和能量，露出一个大大的笑容并说“嗨”。

youdao

When I noticed someone looking unusual or strange, I would look the person in the eye, smile and say, "May I help you?"

当我注意到有人看起来不正常或奇怪时，我会看着那人的眼睛，微笑着说：“我能帮你吗？”

youdao

When she saw her friend Allison walking her little poodle, she would smile and say, "Hi, Allison!"

当杰西看到她的朋友艾莉森带着她的小狮子狗散步时，她总是微笑着打招呼：“艾莉森，你好！”

youdao

I spoke up and said,'Hi,I'm Jimmy. Your song 'Sara Smile' got me a record deal, and I just wanted to say thanks."

VOA: standard.2009.12.30

I've learned when things aren't good to smile and say 'I love you' and we go on.

NPR: Chaplain Struggles with PTSD from Time in Iraq

Today, I think every American would have to smile and say he really did do it his way.

CNN: Clinton Reacts To Frank Sinatra's Death

At first, she had hardly any control over her face, but she can now muster a bit of a smile, and her doctors say with time she should be able raise her eyebrows and make other facial expressions.

CNN: Face transplant recipient's goal: A kiss