VOA慢速英语:How Cooling the Brain May Help People Sleep

短语讲解：

1. Today, we tell how cooling the brain may help people who have trouble going to sleep.

have trouble在…有困难
例句：I have trouble with pronunciation.
我在发音上有困难。
go to sleep睡着
例句：I am too excited to go to sleep.
我很兴奋睡不着。

2. We also tell about two endangered animals that are in danger of disappearing forever.

in danger of处于…危险之中
例句：This animal is in danger of extinction.
这种动物濒临灭绝。

3. People who take pills often come to depend on the drugs. So you lie awake knowing that the new work day will soon arrive.

come to到达; 达成
例句：After much talk they came to an agreement.
经过多次商谈, 他们达成了协议。
depend on依赖, 依靠
例句：All living things depend on the sun for their growth.
万物靠太阳生长。

4. A new study has found that you might fall asleep quicker and stay asleep longer if you try “cerebral hypothermia.” No, cerebral hypothermia is not a complex medical process. It just means cooling down your brain.

fall asleep入睡
例句：He fell asleep over the book.
他看著书睡着了。
cool down冷静下来
例句：I tried to cool him down but he was still angry when he left.
我试着使他冷静下来, 但他离开时还是很生气。

5. The caps had tubes inside filled with water.

fill with (使)充〔挤〕满
例句：The hall was filled with persons welcoming him.
大厅里挤满了欢迎他的人。

6. In general, the animals live only in protected areas of Nepal and India.

in general一般而言, 总的来说, 从总体上看
例句：The class are, in general, very bright.
总的说来, 这个班级的学生都很聪明。

7. Officials have taken strong steps to protect this huge grassland and forest animal.

take step采取步骤
例句：They took steps to prevent the spread of influenza.
他们采取措施阻止流感的传播。

8. And the more people I asked, they said when you find out something about cheetahs let us know, they don’t do well in captivity, they have a very short lifespan, and we’re losing them throughout the ranges in the world. So that just made me fascinated and I wanted to know everything there was about them.

find out发现, 看穿, 揭发, 找出;查明
例句：We must find out the truth of the matter.
我们必须弄清楚事情的真相。
do well in成绩好,…做得好
例句：Peanuts do well in this area.
这一带花生长得很好。
so that结果, 以致
例句：Everyone lent a hand, so that the work was finished ahead of schedule.
每个人都帮了忙, 所以工作提前完成了。

9. So understanding its biology and its behavior, understanding the ecology of it, which really revolves around where it’s living and how it’s living, and that interfaces with humans.

revolve about围绕…转
例句：Planets revolve about the sun and rotate on their axis. 
行星在围绕太阳旋转的同时，也绕着它们的自转轴自转。 

10. Some farmers kill cheetahs because they attack and feed on cattle, sheep and goats.

feed on以…为食,以…为能源
例句：Cows feed on hay.
牛以干草为食。

11. This breed has been used for about five thousand years to protect livestock from predators. And they act as a guardian by avoidance – they bark loudly, they tell a predator that they’re there protecting the flock, and the flock will come around the dog and by the dog barking – the predator doesn’t want to get hurt – and they will then avoid those flocks where the dogs are.

be used for用来做…
例句：Tallow can be used for making soap.
动物脂可以用来做香皂。
protect from保护, 保卫
例句：An umbrella will protect you from the rain.
雨伞可以保护你不至于淋雨。
act as担当…; 起…的作用
例句：An oar often acts as rudder.
桨常可起舵的作用。
come around绕道而行, 调转方向
例句：We had to come around by the wheat fields.
我们不得不绕着麦田而过。