机器学习的基本限制在于，需要从大量过去的数据中学习。

The fundamental limitation of machine learning is that it needs to learn from large volumes of past data.

youdao

我过去是个很贪玩的女孩，从来不知道认真学习。

I was too much of a good-time girl to do any serious studying.

《牛津词典》

要学习这些规律，你必须亲自实践并学习过去一些优秀的演讲。

To learn those rules you have to practice and learn from some outstanding speeches in the past.

youdao

Well I've been taking this course or I've been part of this course for the last three years so every years 0 at Harvard I've been part of CS50 and it's a really special class or organization to be a part of-- really a family and I think Cansu will talk a little bit about that.

在过去的三年里,我一直在学习这门课程,所以，每年我都是哈佛大学CS50课程中的一分子0,这是一门特别的课程,大家就像一家人,我想Cansu会谈谈这一点。

哈佛公开课 - 计算机科学课程节选