Well, of course, it's because he thinks, first of all, there's a soul and it will survive and it's immortal.

当然,这是因为他认为,首先,灵魂是存在的,在肉体死后仍会继续存在,而且灵魂是不朽的

耶鲁公开课 - 死亡课程节选

because, first of all, the salary is not very... high.

而首先是因为这个行业的薪水并不很......高。

建筑学专业教授 - SpeakingMax英语口语达人

Well, first it is important because it's-- you need to track what the population is eating and also individual intake.

说它重要首先是因为,你需要探寻人们都吃什么,还有个体摄入量

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The reason for that is two reasons: first, I want to run it as a workshop, in which you involve and participation.

这样是因为：,首先，我想把课上成一节讨论课，让大家积极参与。

麻省理工公开课 - 电影哲学课程节选

And they're useful because, first of all, they're easy to depict, they're easy to draw relatively easy once we get all the rules down.

它很有用是因为，首先，它很容易描述，它很容易画出来,一旦我们确定了所有的规则以后就比较容易。

麻省理工公开课 - 化学原理课程节选

Now we might at first think that Satan's vaunting here is the product of nothing more elevated than hate and a desire for revenge, but Milton's doing something truly extraordinary.

我们首先会想到撒旦之所以在这里自吹自擂,不过是因为他的仇恨和复仇的欲望，不过弥尔顿在这里做了不同寻常的艺术处理。

耶鲁公开课 - 弥尔顿课程节选