Then you get successively deeper, II through IV, slow, irregular, high amplitude delta waves, and then once you reach stage IV you start going up again, up through stage III and II.
然后睡得越来越深,从第二到第四阶段,慢,不规则,高振幅的δ波,等你到达第四阶段,你又开始返回,第三阶段和第二阶段。
And in Phase 2, you can sign up for however many more that's like, actually permitted.
在第二阶段,你可以报允许范围内的更多的课程。
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。
Phase Two, in the middle Pleistocene phase--700,000 years ago.
第二阶段,在更新世的中期,约七十万年前
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
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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