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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。
Better Sleep
高质量睡眠
Tackle the temperature
注意温度。
Temperature is an aspect of sleep that often gets overlooked,’ says James Wilson, a leading sleep expert.
著名睡眠专家詹姆斯·威尔逊表示说：“温度是睡眠的一个重要方面，但是却经常被忽视。”
But after light, it has the greatest impact on our circadian rhythms, and our bodies are very sensitive to it; itonly takes a change in core body temperature of 0.5 degrees Celsius for our bodies to start waking up.
“但是除光照以外，温度对我们的昼夜规律影响最大，而人体其实对温度非常敏感；只要我们身体核心温度改变0.5摄氏度我们就会醒过来。
On a physiological level sleep issimple.
在生理层面上来说，睡眠其实很简单。
【知识点讲解】
have an impact on 对…有影响，对…起作用，产生效果；
例句：
Society begins to have an impact on the developing child.
社会开始对成长中的孩子产生影响。
The nature of the crop may have an impact on the rate of technological change.
作物的性质可能影响技术进步的速度.
A The Olympics will have an impact on everything in Beijing.
A奥运会的召开对北京的方方面面将产生重大的影响.
take a change 采取改变
例句：
Take a change of clothes with you.
带上一套替换的衣服.
Don't forget to take a change of clothes with you.
别忘了带上一套换洗的衣服.
We should take a change of clothes.
我们应该带一套换洗的衣服.
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