Have you ever had trouble sleeping in a new place?
你有没有在陌生的地方睡不好觉的经历?
Lots of people do.
很多人都有。
And now researchers from Brown University in Rhode Island think they know why.
来自罗德岛州布朗大学的研究人员表示他们知道原因。
They found that one-half of the brain” remains more awake” than the other half
他们发现，当人们在陌生的地方睡觉时，
when people are trying to sleep in a new place.
一半大脑比另一半“更清醒”。
This appears to be a case of the brain 【keeping people ready for】 trouble in a new place, the researchers said.
准备好应对某事 keep/get/be ready for sth.
研究人员说,这似乎是一个大脑让人们在一个新地方为麻烦做好准备的例子。
The sleep findings were reported in Current Biology and by Brown University.
这份关于睡眠的研究结果发表在布朗大学的《当代生物学》杂志上。
In their report, the researchers said many people report
在这份报告中,研究人员说
they 【have a harder time sleeping】 the first night at a hotel or other places outside their home.
做某事很困难 have a harder time doing
Eg:She is having a harder time writing her dissertation.
许多人表示,在旅馆或家以外的其他地方,第一个夜晚很难入睡。
They call it, "first-night effect."
他们把这称为“首夜效应”。In Japan they say, ‘if you change your pillow, you can't sleep,"
“在日本,人们说:‘如果你换了枕头,就睡不着了,’”
said Yuka Sasaki, one of the report's authors.
这份报告的作者之——佐佐木优香(Yuka Sasaki)说道。
"You don't sleep very well in a new place."
你在一个新的地方睡不好觉。
We all know about it."
这是众所周知的。”
The researchers measured brain waves for 35 volunteers over two nights in a laboratory.
在一个实验室里,研究人员记录了35名志愿者两个晚上的脑电波。
The two nights were a week apart.
这两个晚上相隔一周。
They found during the first night
他们发现第一晚期间，
the left hemisphere of the brain was more active than the right hemisphere.
左侧大脑半球比右侧大脑半球更活跃
This was during the first deep-sleep period, the researchers said.
研究人员说,这种情况出现在第一个深度睡眠阶段。
Sasaki said a lot of questions remain.
佐佐木说,还存在许多问题。
Researchers did not keep measuring brain waves all night long.
研究人员并没有整晚都监测脑电波。
So, they don't know if the left hemisphere keeps "watch" all night.
所以，他们不知道左侧大脑半球是不是整晚都在“值班”。
or whether it 【"works in shifts"】 with the right hemisphere later in the night.
倒班；轮值 work in shifts
Eg: He and his colleague work in shifts round the clock.
或者它是否在深夜与右侧大脑半球”轮流工作”。
They also do not know why the extra brain activity,
他们也不知道为什么额外的大脑活动，
at least during the first phase of deep sleep,
至少在深度睡眠的第一阶段，
is always on the left hemisphere,
总是发生在左半球。
For some, this research may be calming.
对一些人来说,这项研究让人安心。
It is good to know that our brain is "【looking out for】 us," in a new place.
留心；堤防；照顾某人
Eg: My older brother always looked out for me when we were kids.
知道在陌生的地方,大脑会为我们“放哨”,是件好事。
But it may not help with sleep.
但这也许对睡眠没有都助
That extra brain activity
额外的大脑活动，
makes it harder to get the sleep people need to wake up 【well rested】 in the morning.
精力充沛
Eg: We came back from our holiday feeling relaxed and well rested.
使人们更难获得充足的睡眠，在早晨精力充沛地醒来。
at least according to this new research,
至少根据这项新研究来说，
makes it harder to get the sleep people need to wake up well rested in the morning.
使人们更难获得充足的睡眠、从而在早晨精力充沛地醒来。
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