What are the benefits of drinking coffee and caffeinated drinks?: BBC Learning English from the News · BBC Learning English
本期节目探讨咖啡和含咖啡因饮料对大脑的益处，如预防记忆疾病和提升幸福感。适合练习词汇和新闻理解。
From BBC Learning English.
来自 BBC 的“学习英语”（Learning English）项目。
This is Learning English from the News, our podcast about the news headlines.
这是《从新闻中学习英语》（Learning English from the News）——我们的播客节目，专门聚焦新闻标题的内容。
In this programme, how drinking a few cups of coffee or tea each day can help keep your brain healthy and working well.
在这个节目中，我们将探讨每天喝几杯咖啡或茶如何有助于保持大脑的健康并使其正常运作。
Hello, I'm Becca.
你好，我叫贝卡。
And I'm Neil.
我叫尼尔。
In this programme, we look at one big story and the vocabulary in the headlines that will help you understand it.
在这个节目中，我们将探讨一个重要的事件，以及相关新闻标题中出现的词汇，这些词汇将帮助你更好地理解这一事件。
You can find all the vocabulary and headlines from this episode, as well as a worksheet on our website, bbclearningenglish.com.
您可以在我们的网站 bbclearningenglish.com 上找到这一集中的所有词汇和新闻标题，同时还有一份配套的学习练习表。
A UK study suggests that drinking coffee within a few hours of waking up can make you happier.
一项英国研究表明，在醒来后的几小时内喝咖啡会让你更快乐。
The Head of the Happiness, Culture and Personality Research Group at the University of Warwick, Professor Anu Realo,
华威大学幸福、文化与人格研究小组的负责人阿努·雷洛（Anu Realo）教授
explains that this may be because caffeine, the stimulant found in tea and coffee, blocks a chemical that makes us feel tired.
这可能是因为咖啡因（存在于茶和咖啡中的兴奋剂）会阻断某种能够让我们感到疲倦的化学物质。
Yes, and a stimulant is something that causes an effect or stimulates an effect.
是的，兴奋剂是一种能够引发某种效果或促进某种效应的物质。
At the same time, caffeine encourages, or stimulates the release of dopamine, which some people know as the happy hormone.
与此同时，咖啡因会促进多巴胺的释放；多巴胺被一些人称为“快乐荷尔蒙”。
The European Food Safety Authority recommends that adults should not drink more than 400mg of caffeine per day.
欧洲食品安全局建议，成年人每天摄入的咖啡因量不应超过400毫克。
That's generally equivalent to three to four cups.
这通常相当于三到四杯的量。
Let's have our first headline.
让我们来看第一条新闻标题吧。
This is from The Standard, a British newspaper.
这篇文章来自《The Standard》，这是一份英国报纸。
Coffee brings happiness and may prevent stroke - 7 key points for healthy coffee consumption.
咖啡能带来幸福感，还有助于预防中风——以下是健康饮用咖啡的7个关键要点。
That headline, again from The Standard.
那个标题，同样来自《标准报》（The Standard）。
Coffee brings happiness and may prevent stroke - 7 key points for healthy coffee consumption.
咖啡能带来幸福感，还有助于预防中风——以下是健康饮用咖啡的7个关键要点。
This headline draws attention to how drinking coffee can prevent stroke, a medical emergency where blood stops flowing to a part of your brain.
这个标题引起了人们的注意，它说明了喝咖啡如何有助于预防中风。中风是一种医疗紧急情况，在这种情况下，大脑的某部分血液供应会中断。
We're going to focus on the word key.
我们将重点关注“key”这个词。
Now what can you tell us about this word key, Becca?
那么，贝卡，关于这个“单词查询工具”，你能告诉我们些什么呢？
Well, you may be familiar with the object key, which can be used to open a door.
嗯，你可能已经熟悉了那种可以用来开门的“钥匙”了。
But when we use key as an
但是，当我们把 “key” 用作……（此处原文不完整，无法准确翻译）
adjective, we're saying that something is really important, in the same way that a key is crucial for unlocking a door.
形容词：我们用这个词来表示某事物非常重要，就如同钥匙对于打开门来说至关重要一样。
Yes.
是的。
So, it might be useful to think of key as a metaphor for something that gives you access,
因此，将“key”（钥匙）视为一种象征或许会很有帮助——这种象征代表着某种能够让你获得某种访问权限或使用权的东西。
perhaps to knowledge or an idea.
也许是为了获取某种知识或形成一个想法。
So, when we look at the language in the headline, it describes key points.
因此，当我们查看标题中的语言时，会发现它正在描述一些关键要点。
These are the important points.
这些就是重要的要点。
Yes, and you might hear the expression key witness in a court case, for example.
是的，在法庭案件中，你可能会听到“关键证人”这样的表述。
And the key witness is the person with really important knowledge.
而关键证人，正是那些掌握着极其重要信息的人。
Yes.
是的。
Or, in a sports team, you might have a key player.
或者，在一支运动队中，你可能会遇到一名关键球员。
This is the player who performs the most important role.
这位玩家扮演着最重要的角色。
We've had key, describes something important.
Key”这个词用来表示某件非常重要或核心的事物。
For example, friendship plays a key role in building social skills.
例如，友谊在培养社交技能方面起着关键作用。
This is Learning English from the News, our podcast about the news headlines.
这是《从新闻中学习英语》（Learning English from the News）——我们的播客节目，专门聚焦新闻标题的内容。
Today we're talking about coffee and how new research says it's good for your brain.
今天我们要讨论的是咖啡，以及最新研究表明咖啡对大脑有益这一事实。
Another headline tells us that two to three cups of coffee each day can help lower the risk of memory loss diseases,
另一则新闻标题告诉我们：每天饮用两到三杯咖啡有助于降低患记忆丧失相关疾病的风险。