词汇：
1.Speculations 有投机的意思
2.is not simply a matter of
not simply a matter of...不仅仅是……。
simply a matter of+doing sth
3.in terms of
4.is specifically concerned with
5.in the pattern of activity
6.any less
far less
7. fundamental
8.in the pattern of activity
9.shows that
10.is punctuated with
11.for several nights on end.to a degree，在一定程度上，相当。
12.to som extent
to vary degree..a plausible hypothesis
语法点：
主谓省略
The body's tissues are self-repairing and self-restoring to a degree, and function best when more or less continuously active.
1）主句主语和从句主语一直。
2）都有系动词be
When woken at other times they reported no dreams.In fact a basic amount of movement occurs during sleep which is specifically concerned with preventing muscle inactivity.
This might be a plausible hypothesis were it not for two factors.
虚拟条件的虚拟语气，倒装。were it not for two factors，这是省略了if的条件句，可译作“如果不是下面两个因素的话”。
if /should 经常会省略
Some years ago an American psychiatrist named William Dement published experiments dealing with the recording of eye-movements during sleep. 两个分词短语做状语
who is named
which were deal with???The implications of all this were that it was not the disturbance of sleep that mattered, but the disturbance of dreaming.
several nights on end，一连几夜。
on end：连续地。
例句：It has been raining for days on end.
一连好几天连续下雨。
it was not the disturbance of sleep that mattered, but the disturbance of dreaming. 这是一个表示否定的强调句，把强调结构"it was not...that"去掉，句子仍然成立，只是语气减弱了："The disturbance of sleep doesn't matter, but the disturbance of dreaming matters."
then perhaps it is the brain that needs resting? 这是一个陈述句的语序，但句尾加问号，表示说话人对这种观点有把握但需进一步证实。
写作时长短句交错原则。
重要观点用短句，详述论点用长句。
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