所以行列式的优点就是，你可以让它们做一些事情，如果你是在上线性代数课的话，你就会学到这些。

So the nice thing about arrays is, you can use them to do the kinds of things you, if you ever took a linear algebra course, you learned about doing.

youdao

回家就在上网，不聊天，不上线，看电影，我觉得是在浪费时间或者准确一点，打发时间，打发自己。

Home in Internet, don't chat onward, watching movies, I think it is a waste of time or accurate point, to kill time, sent himself.

youdao