(单词翻译:单击)
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。
Speak a new tongue.
说一种新语言。
Many people agree that learning to speak a new language is a powerful way to give the mind a stretch. If you've ever tried to learn even a few new words, then you know this can be difficult. Of course, the harder something is for the brain, the better! You have so much more mental capacity than you might imagine. Give it a try!
许多人同意学习一门新语言是使思想延伸的一种有力途径。如果你曾经尝试学习即使是几个新单词，那么你知道这会很难。当然，给大脑越难的东西越好!你有比你想象的要多得多的思维能力。让它试一下吧！
Memorize a song.
记忆一首歌。
Many of us have lots of old songs stored in our heads, but why not expand your memory by learning a few new tunes? It may take awhile at first, but if you keep at it, you will find it gets easier. This is your brain getting back in shape.
我们很多人头脑中都储存有许多老歌，但为什么不通过学习一些新的调子来扩充我们的记忆？它将在开始的时候花费一点时间，但如果你坚持怎么做，你将发现会越来越简单。这是你的大脑恢复状态了。
【知识点讲解】
capacity n.容量； 才能； 性能； 生产能力
例句：
Spending could outrun the capacity of businesses to produce the goods.
消费有可能超出企业的产能。
Grease 6 ramekin dishes of 150 ml (5-6 fl oz) capacity.
将6个容量为150毫升（5至6液盎司）的烤盘涂上油。
Her mental capacity and temperament are as remarkable as his.
她的才智和气质和他一样出众。
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