可可电台，每期节目一话题，让英语磨练耳朵的同时学到更多有益的小知识，丰富知识的同时受益于生活。

exercise your brain.

锻炼你的大脑。

Recall old memories.

唤起远久的记忆。

Get out those old picture albums and start thumbing through them. This taps into your brains memory banks. Pictures will help you recall things that you thought you forgot. Dig deep to see just what all you remember. If you have other ways to stimulate your memory, like old letters or home movies, then by all means use those too.

找出老照片并且开始翻阅。这将进入你头脑中的记忆银行。图像将帮助你想起你已经忘记的东西。深入挖掘就是所有你记得的东西。如果你有别的方法来唤醒你的记忆，就像以前的信件和家庭电影，那么也尽可能得利用它们。

Make beautiful music.

Learning to play a musical instrument is a great way to super-charge your brain. It requires a number of different parts of your brain to work together to make the melodies that you desire. Of course, if you are already a musician, then learn a new piece. Push yourself to learn new techniques. Music is a great workout for the mind.

创造优美的音乐。

学习演奏一件乐器是超级改变你的大脑的方法。它需要你大脑的多个不同部分协调工作来创作出你想要的旋律。当然，如果你已经是一个音乐家了，学习一件新的东西。迫使你自己学习新技术。音乐是思想伟大的锻炼。

【知识点讲解】

a number of 许多的； 一些；

例句：

And a number of African countries, too, are slipping through the net.

并且一些非洲国家也被漏掉了。

A number of governments banned the ship from their territorial waters.

许多国家都禁止那艘船进入其领海。

Once at Elgin day-trippers visit a number of local sights.

一到达埃尔金，一日游的游客就参观了一些当地的风景名胜。

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