2022☆B站最佳听力精选·初级+中级+高级丨坚持3个月·大幅提升英语能力丨英语
☆☆ Lesson·1 How does food affect your brain丨食物如何影响你的大脑的
☆ The foods you eat supply your body with energy.
你吃的食物为你的身体提供能量.
☆ Your body needs energy to move, breathe, and even to sleep.
你身体需要能量来移动、呼吸，甚至睡觉.
☆ One part of your body uses a surprising amount of energy.
你身体的某一部分会消耗惊人的能量.
☆ It's surprising because this part of your body is small only 2 to 3 percent of your total weight, but it uses 20 to 30 percent of the energy from your food.
令人惊讶是因为你身体的这一部分很小，仅占总重量的2%到3%，但消耗了食物中20%到30%的能量.
☆ Can you guess what it is?
你能猜出这是什么？
☆ It's your brain.
这是你的大脑.
☆ No doubt you know that drugs affect the brain, but did you know that food affects it, too?
毫无疑问你知道药物会影响大脑，但是你知道食物也会影响大脑吗？
☆ Different types of food affect the brain in different ways.
不同类型的食物以不同的方式影响大脑.
☆ Sometimes we can feel the changes that food makes in our brains.
有时我们可以感受到食物对我们大脑的影响.
☆ For example, most people can feel a change almost immediately after drinking coffee.
例如，大多数人在喝咖啡后几乎可以立即感受到变化.
☆ The caffeine in coffee makes people feel mentally sharper and more awake.
咖啡中的咖啡因让人感觉精神更敏锐、更清醒.
☆ After a cup of coffee, a person can think and make decisions more quickly.
一杯咖啡后，一个人可以更快地思考和做出决定.
☆ Other foods affect the brain in ways that we cannot feel, so we aren't aware of the effects.
其他食物以我们感觉不到的方式影响大脑，所以我们不感受到影响.
☆ We do not realize how these foods influence us.
我们没有意识到这些食物如何影响我们的.
☆ However, everything we eat matters.
然而，我们吃的每样东西都很重要.
☆ Our food affects how smart we are, how well we remember things, and how long we can concentrate.
我们的食物会影响我们的聪明程度，影响我们的记忆力，以及注意力的时长.
☆ For example, researchers have found that:
例如，研究人员发现：
☆ · Eating breakfast makes students do better on tests.
· 吃早餐使学生在考试中表现更好.
☆ · Spinach， berries, and other colorful fruits and vegetables help keep older brains from slowing down.
· 菠菜、浆果和其他五颜六色的水果和蔬菜有助于减缓大脑衰老.
☆ · Eating large amounts of animal fat(in meat and cheese, for example) makes learning more difficult.
· 吃大量动物脂肪（例如肉类和奶酪）会使学习更加困难.
☆ · Fish really is "brain food".
· 鱼真是“健脑食品”
☆ Many people have long believed that eating fish was good for the brain, and now scientists are finding that this is true.
许多人一直认为吃鱼对大脑有好处，现在科学家们发现这是真的.
☆ For millions of years, the brains of early human beings stayed the same size.
数百万年来，早期人类的大脑保持不变.
☆ They weighed only about one pound(400 to 500 grams).
它们仅重约一磅(400至 500克).
☆ Then, during the last million years or so, there was a big increase in brain size, with the human brain growing to about three pounds on average.
然后，在过去一百万年左右的时间里，脑容量大大增加，人类的大脑平均增长到了三磅.
☆ This increase in brain size meant an increase in brainpower.
大脑大小的增加意味着脑力的增加.
☆ With bigger, more powerful, more advanced brains,
拥有更大、更强、更先进的大脑，
☆ human beings became smart enough to build boats and invent written languages.
人类变得足够聪明，可以造船和发明书面语言.
☆ They developed forms of music and began to create works of art.
他们开发了音乐形式并开始创作艺术作品.
☆ Some scientists say that the big change in the size of the human brain happened after people started to eat fish and other kinds of seafood.
一些科学家说，人类大脑大小的巨大变化发生在人们开始吃鱼和其他种类的海鲜之后.
☆ Seafood contains a certain kind of fat, known as omega-3 fat.
海鲜含有某种脂肪，称为omega-3脂肪.
☆ According to these scientists, omega-3 fat caused the increase in brain size.
根据这些科学家的说法，omega-3脂肪会让脑容量增加.
☆ Today, brain scientists in general agree:
今天，脑科学家普遍认同：
☆ This fat is still important for healthy brains, and most of us are not getting enough of it.
这种脂肪对健康的大脑仍然很重要，而我们大多数人都没有得到足够的omega-3.
☆ Did you realize that your brain is always changing, no matter how old you are?
你是否意识到，无论多大年纪，你的大脑都在不断变化？
☆ The foods you eat affect how your brain grows, how well you learn, and how well you remember things.
你吃的食物会影响你大脑的发育，影响到你的学习，以及你的记忆力.
☆ Maybe you have never thought about how you feed your brain.
也许你从来没想过你是如何喂养你的大脑的.
☆ Luckily, it's never too late to start feeding it well.
幸运的是，喂养大脑永远不会太晚.
