小故事

Stay Thin by Sleeping More
想苗条多睡觉
A recent study found that people who sleep less tend to be fat，and experts said it's time to find out if more sleep will fight obesity.
最新的一项研究表明睡眠不足的人易发胖。专家们表示现在是时候调查一下睡得多是否有助于减肥。
"We've put so much emphasis on diet and exercise that we've failed to recognize the value of good sleep，"said a physician.
一位内科医师说：“我们一直过份强调节食和锻炼，以至于忽略了良好睡眠的作用。”
The study covered 1,000 people and found that total sleep time decreased as body mass index－a measure of weight based on height-increased.
这项研究对1000名受试者的研究显示累计睡眠时间和体重指数刚好成反比，体重指数是一种以身高为基准来衡量体重的方法。
Men slept an average of 27 minutes less than women and overweight and obese patients slept less than patients with normal weights, it said. In general the fatter subjects slept about 1.8 hours a week less than those with normal weights.
该研究显示男性的睡眠时间平均比女性少27 分钟，而肥胖病人比正常体重的病人睡眠时间少。总的来说，体态肥胖的受试者每周比正常体重的受试者少睡约1.8 小时。
"Our findings suggest that major extensions of sleep time may not be necessary，as an extra 20 minutes of sleep per night seems to be associated with a lower body mass index，"it added.
同时该研究还显示：“我们的调查结果表明没有必要大量增加睡眠时间，每晚多睡 20 分钟似乎有助于降低体重指数。”
"We caution that this study does not establish a cause-and-effect relationship between restricted sleep and fatness，but investigations demonstrating success in weight loss via extensions of sleep would help greatly to establish such a relationship."
“我们要提醒大家的是这项研究的结果并不足以证明节制睡眠和肥胖之间的因果关系，然而调查显示延长睡眠时间确实可以成功减轻体重，这对于证明这一因果关系非常有帮助。”

重点讲解

重点讲解：
1. be based on
以…为基础；
eg. Instead, you can select banks based on what you've learned.
你可以根据自己的了解选择银行。
eg. Constructive criticism can be useful if it's based on performance or behavior.
建立在个人的行为和表现之上的建设性批评是有用的。
2. in general
总的来说；总体上来看；大体上；
eg. She had a confused idea of life in general.
总的来说，她对生活非常困惑。
eg. I think we need to improve our educational system in general.
我认为有必要从整体上改进我们的教育体系。
3. be associated with
（与…）相关的；相联系的；
eg. Purple is associated with royalty.
紫色与尊贵联系在一起。
eg. In children's minds, summers are associated with picnics.
在孩子们看来，夏天总是和郊游连在一起的。