如果没有，你可以下载并安装它。

If not, you can download and install it.

youdao

找到它之后，他就下载并安装它。

When he finds it, he downloads and installs it.

youdao

下载并安装服务器归档文件。

Download and install the server archive.

youdao

- And that's because hello.c is something I just wrote -- it's not something I downloaded or bought and installed via double-clicking or anything like that -- because I wrote it, compiled it in my current directory, I have to be ever-so emphatic to the computer that it's actually right here.

那是因为hello，c是我所写的东西-,而不是从哪里下载或购买,并通过双击安装的程序,-因为那是我写的程序，在我当前目录下编译的，我们不得不对计算机强调,它是在这个地方的。

哈佛公开课 - 计算机科学课程节选