No. 3. This is what mind maps do. And this is what you want. It helps you get memory -- a better memory. Think USB key. Because of the repetition of focus, we write it out.

3. 这就是思维导图的作用。 这就是你想要的。 它可以帮助您获得记忆力——更好的记忆力。 No.想想 USB 密钥。 因为重复的重点， 我们写出来了。