You start off with a transition period when you're falling asleep. We call that stage I.
一开始是过渡期,你开始进入睡眠状态,这是第一阶段。
And that's where like, in Phase One, you can only sign up for 10 units worth of classes.
比如说,在第一阶段,你只能报10个学分的课程。
They show these as some of the first stages and then intermediate changes they depict it as this, and then the final one is this.
把这定义为第一阶段,这是中间阶段,再是最终阶段
So, the oral stage is when you start off.
第一阶段是口腔期。
but that class got filled up, because I had a late Phase One for example, and so.
但是那个课已经被选满了,因为我在第一阶段选晚了。
Phase One, the million and a half years ago, in the early--in the late--Miocene and early Pleistocene phases, there was shift where people were less likely to be just going out and gathering foods from every place they could find it.
第一阶段,一百五十万年前,在整个中新世以及更新世的早期,情况开始转变,人们不光靠,出门四处搜集食物
But the Phase 1s and Phase 2s, they're not exactly the same for everyone.
但是第一阶段和第二阶段,对每个人来说,并不是完全一样的。
Two of the key players there are Frank Speizer, a physician who got the study started, The Nurses' Health Study I, that got started in 1976, and then Walter Willett who got Nurses' Health Study II started, and is still the principle investigator of these studies.
弗兰克.斯佩萨是两名关键成员之一,就是这位内科医生提出进行 这项研究,第一阶段护士健康研究开始于1976年,另一位主要成员是沃尔特·威莱特,他开始了第二阶段的护士健康研究,他还是这些研究的理论调查者
So some people have an early Phase 1, some have it later on.
所以有些同学在第一阶段早选课,有些同学就要稍后再选。
You start off and you go down, down, down, and then you come up, then you get your first REM cycle, again, again, again, again, again, and then you wake up.
从第一阶段开始,到下面的阶段,然后又往上,这时就出现REM睡眠,然后再一次次地循环,直到你睡醒。
There's what's called Phase 1 and Phase 2.
这就是所谓的第一阶段和第二阶段。
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