But the first key issue is that it's good in and of itself-- almost needs no justification.

但首先的关键问题是快乐本身是好的-,几乎无需辩解。

哈佛公开课 - 幸福课课程节选

But the very first point that needs to be made, I think, is this.

但首先需要说明的，我认为是这个。

耶鲁公开课 - 死亡课程节选

The Garden of Eden contains,first of all,just Adam and then when God decides, for his own reasons, that he needs a companion, he invents one other companion,Eve.

最初,伊甸园中只有亚当一人,接着上帝出于自己的理由,认为亚当需要一位伴侣,于是创造了夏娃

耶鲁公开课 - 古希腊历史简介课程节选

I'd actually like to explore a slightly alternate possibility of just taking the one of the five who needs an organ who dies first and using their four healthy organs to save the other four.

其实我想知道可否稍微变通一下,就是选择五人中最先死的那人,利用他的器官来救其他四人。

耶鲁公开课 - 公正课程节选

Several things happen during mitosis, first, when a cell enters the process of mitosis it already has twice the DNA that it needs.

有丝分裂中有几个重要的步骤,首先,当细胞进入有丝分裂过程,细胞中已含有两倍于其正常所需的DNA

耶鲁公开课 - 生物医学工程探索课程节选

First of all, as I just noted, the argument needs premise number one.

首先,像我刚才提到的,这个论证的成立需要前提一

耶鲁公开课 - 死亡课程节选

The style of warfare that emerges in this period, apparently for the first time, is what we call the hoplite phalanx and each half of that needs to be explained.

显然,这个时期第一次出现了,一种独特的战争形式,那就是重步兵方阵,我来给大家分别解释下这两个词

耶鲁公开课 - 古希腊历史简介课程节选