例如，当地山谷系统内部和之间的降雨变化很大，因此，即使相邻的农田也可以产生明显不同的产量。

Rainfall, for example, varied within and between local valley systems, so that even adjacent agricultural fields can produce significantly different yields.

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答案在于两个相关的物种之间的差异，它们的消化系统和体型。

The answer lies in two associated differences among the species, in their digestive systems and body sizes.

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相比之下，外部系统是公司与其客户群之间的接口。

By contrast, an external system serves as an interface between a company and its customer base.

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And therefore as a system, the difference between Israel's God and the gods of Israel's neighbors was not merely quantitative. It was qualitative.

而从系统上看来，以色列上帝和其他国家的神之间的区别,不只是数量上的，更是性质上的。

耶鲁公开课 - 旧约导论课程节选

We've talked about the interesting way in which the digestive system contacts the external environment.

我们会讲到,消化系统与外环境之间十分有趣的联系

耶鲁公开课 - 生物医学工程探索课程节选

What would happen is these people who were enslaved from different cultures would develop a makeshift communication system so they could talk to one another.

这些来自不同文化的被奴役的个体,会创造出一种临时的交流系统,以便他们之间能够互相交流

耶鲁公开课 - 心理学导论课程节选