它告诉我现在正处于哪个文件夹下。

It tells me what folder I am inside of.

youdao

Data 文件夹下有两个导出选项

You have two export options under the Data folder

youdao

该文件夹下应该显示KEEL_DB数据库。

The KEEL_DB database should be displayed under the folder.

youdao

Because I know this program was saved by default into my current folder, my current directory, so dot slash means run the program called a.out that's right here in my current directory not in, like, a out my applications folder or somewhere else.

程序默认保存在,当前目录下的文件夹，/意味着运行这个名为“a，out“的文件,是我当前目录下的文件，而不是应用程序文件夹或其他别的地方的。

哈佛公开课 - 计算机科学课程节选