You'll need to learn this off by heart.

你需要把它背下来。

A couple of years. But I learned English off-world.

几年 但我在其他地方学的英语。

Sorry, I haven't learned it off by heart.

对不起, 我还没有把它背下来。

It's a celebration of all those picnics we had when we were kids and what we learnt off our mams.

是所有我们年少时从母亲那里学来的野餐的集合。

Start learning intuitively with Brilliant for 20% off by being one of the first 200 people to sign up by clicking the link in the description.

点击简介中的链接，前 200 名注册用户可直接以八折优惠的价格开始在 Brilliant 平台任意学习。

At the end of this lesson, you will have a complete self introduction that is ready to use, and ready for you to learn off by heart.

在这节课的最后，你将会有一个完整的可以立即使用的自我介绍，你可以记忆。

We provide feedback on less than 1% of the actions the algorithm makes, and it can still learn difficult concepts off of these extremely sparse and vague rewards.

我们提供了算法产生动作的不到1%的反馈，它仍然可以从这些极其稀疏模糊的奖励中学到困难的概念。

I mean, we're going to tell you, but we're not gonna tell you here in this podcast, because we have now been soiled by this truth  we learned off the record.

我的意思是，我们会告诉你，但我们不会在这个播客中告诉你，因为我们现在已经被我们私下了解到的真相弄脏了。