A hello you may never have expected but that may just be the one you need.

一个你从来没有预期的‘你好’却往往可能是你真真需要的。

youdao

Hello, I just called you a few seconds ago because there were people in my shed.

你好, 我刚刚打了电话来, 因为有人在我的库房里.

youdao

Pick up the phone and call them when you think of them, just to say hello. Send a quick Facebook message to let them know you were thinking of them.

当你想起某人，拿起话筒，给他们打个电话，哪怕仅仅说一句问候，或是在Facebook上发个信息，让他们知道你在想他们。

youdao

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

So with the fact that I'm now just back at my prompt is a good thing so now GCC hello c if I type this command GCC hello.c, this is gonna run this program that Apple wrote in this case GCC or someone else wrote called GCC.

也就是说我们现在安全返回,说明一切正常,现在我输入这条命令：,这代表运行hello，c这个程序,是由“Apple“或其他人编写的，名为。

哈佛公开课 - 计算机科学课程节选

Besides, it doesn't make sense to tease an alien civilization with just a "hello, " considering that it could take millennia before we hear back from them.

FORBES: How To Talk To Aliens

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...

If a bank can't spare anybody to work the doorway, says Marchese, "I tell branch managers to put a bell over the door and just have everybody on the teller line look up and say hello, " the way chefs do in small sushi restaurants.

FORBES: OutFront