李如晨说，我们不能进到教室中，所以这是了解她学习内容的一个好办法。
'We can't step into the class so it's a good way to understand what she learned,' Ms. Li says.
将问题混合在一起学习的方法是说在一个相对学习内容学习完成之后，你已经复习完了你之前学习过的内容。
Mixing problems means that you end up reviewing information you've studied before after a spaced interval.
对于这些内容页重复学习时间是4天以后，这就是说你要在第4天的时候进行复习。
All of them will be scheduled for repetition in four days and you will have to repeat them in four days.
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