"Hello!" the voice said, more peremptorily. "Who is it? Who do you want?"

“喂！”那声音更加霸道地说道，“谁啊？你要干什么？”

《柯林斯英汉双解大词典》

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

Hello everybody! Do you remember me?

大家好！还记得我吗？

youdao

dot slash hello" runs the program what do we often see if you omit -- little sanity check -- the "dot slash" ?

，/hello“是用来运行程序的，我们经常看到的,如果你省略--作为一点提醒--那个“，/“呢？

哈佛公开课 - 计算机科学课程节选

So it turns out a really nice shortcut on most systems, oops, is to say if you have a file called hello.c and you wanna turn it into a program called hello, well, make hello just write in the command makeHello and it will do all of that for you automatically and hand you a program called hello.

就是寻找一种能在大多数系统上运行的更快捷的方式，哇！,也就是说，你有一个hello，c的文件,你想把它变成一个名为hello的程序，那么只需要敲入命令,它就会自动为你生成,一个hello程序。

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

Before I do so, I want to say hello to two people in the hall with you tonight.

NPR: Transcript: President Bush At The RNC

Do you reach out to people before you actually need something just to say hello or keep a connection going?

FORBES: But Networking Doesn't Work for ME...