碳的循环在学校教科书中已经讲过了。
但是这些是重要的概念，我们已经讲过了。
But these are the important concepts which we've just gone through.
例如，在《诗篇》，我已经讲过了，我不会再讲。
Look, for example, at Psalm — well, I've already done that I'm not going to do that.
这就到了整个展示的结尾了。我已经讲过了…… …
That brings me to the end of my presentation. I've talked about…
我上节课已经讲过了，当然，殉道士游斯丁就是其中一个例子。
I've talked about that last time, and of course Justin Martyr is one of the examples of this.
另一件关于二重积分的是，我们已经讲过了，如何做更复杂的变量变换。
OK, now another thing we've seen with double integrals is how to do more complicated changes of variables.
风险管理政策是基于企业事务的优先顺序制定的，这点在这一章前半部分已经讲过了。
The risk management policy is predicated on setting organizational priorities, which are discussed in the first half of this chapter.
比如，保罗的第一次传道旅行，还有第15章的耶路撒冷会议，这个我们已经讲过了。
You get, for example, the first missionary journey of Paul, then you have the Jerusalem conference in chapter 15, which we've talked about already.
我知道我有1到2课，我已经讲过了，设计和许可基础，我想我已经给了所有我需要做的。
I know I have one or two lectures that I've already covered, already design and license basis, I think I've given it all I need to do on that.
大夫离开的那个晚上，可怜的父亲身无分文了，但他们给他做了一个心电图，使他得以呆在那里——显然，那天晚上大夫已经跟别人讲过了他的事情。
The night doctor had gone, and the poor father had no money left, but they gave him a cardiogram anyway, and kept him there-apparently the night doctor had managed to speak with someone.
我已经跟他们讲过了。
章节。 5.7课程进行至此，本章节有些部分已经在先前的课堂讲过了。
Sec. 5.7 By the time we get this far; this section will have been covered as part of the prior lectures.
我们真希望他已经和我们讲过了。
我们真希望他已经和我们讲过了。
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