一些学者认为，集中在这些地点的城市核心区的水资源为玛雅精英提供了一个集中的政治权力来源，而这些权力主要是基于对水资源的控制。

Some scholars argue that the concentration of water within the urban core of these sites provided a centralized source of political authority for Maya elites based largely on controlled water access.

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美国-加拿大的研究将集中在这些问题上。

The U.S.-Canadian study will focus on such issues.

youdao

美国-加拿大的研究将集中在这些问题上。

The U. S. -Canadian study will focus on such issues.

youdao

So realize if it doesn't quite sink in today, not a problems in terms of these low level details.

如果你们没有完全吸收我今天讲的内容，没关系,这些小细节都会在习题集中找得到。

哈佛公开课 - 计算机科学课程节选

One of the inputs to the problems we're gonna be working on this semester and if you continue on in this world how much thought it takes to implement something, how much time it takes to run something, how much space it takes to run something?

我们将在本学期集中探讨这些问题,或者在课程之后你们也可以继续研究,为实现一些功能要有多少想法，在运行过程中又将花费多长时间，需要多大的空间？

哈佛公开课 - 计算机科学课程节选

A star is a preview, is referring to what's called a pointer, similar in spirit but more dangerous than references in Java for those familiar, but we'll soon focus on these next week.

是一个预览，它叫做,一个指针，精神上类似的,但是在Java中提及这些熟悉的是更危险的,但是我将在下周集中研究这个。

哈佛公开课 - 计算机科学课程节选