In U. S., before the atomic clocks become prevalent a few years ago, there's no way to know the exact time.

但在美国，就在几年前，原子钟还没流行起来的时候，你是没办法知道精确时间的。

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Essentially, the traditional view, a view that's been prevalent for over 250 years, is that the Romans copied Greek sculptures because they couldn't create sculpture of their own.

基本上，这一传统的观点（一种盛行了250多年的观点）认为罗马人模仿希腊雕塑是因为他们无法创造自己的雕塑。

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One prevalent quality we have found in teens' statements about themselves, their friends and their families is a strikingly positive emotional tone.

我们在青少年关于自己、朋友和家人的描述中发现的一个普遍特征是，它们都带有一种非常积极的情绪基调。

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So, if you were to lose half your brain, the other half can actually do a lot but some things are more prevalent and more powerful in one part of the brain than the other And I want to show you a brief film clip from "Scientific American" that illustrates the differences between the hemispheres, but before doing that,I want to provide some introductory facts.

如果你失去了半个大脑,另外一半其实也可以完成很多功能,但是某些功能是存在单侧化优势的,我给你们播放一段短片,来自于《科学美国人》,它解释了大脑两半球的功能差异,但在此之前,我想先做一些介绍

耶鲁公开课 - 心理学导论课程节选

Schistomiosis, which is a worm that lives in river waters, causes terrible diseases that are still prevalent in many parts of the world.

血吸虫,是一种生存在河水中的蠕虫,可以引起严重疾病,并仍在世界上众多地区广泛流行

耶鲁公开课 - 生物医学工程探索课程节选

What the Market Revolution was, in so many ways, was an engine, a tremendous Charles Sellers has written a famous book on this it was a tremendous engine for what became arguably the most prevalent idea of the entire nineteenth century in America, and that's the notion of progress.

在很大层面上,市场革命,就是一个巨大的发动机,查尔斯·塞勒斯,曾经为此写过一部书,市场这个巨大的发动机,它带来了十九世纪最流行且有争议的看法,即,对进步的观念

耶鲁公开课 - 美国内战与重建课程节选

Equities have broken records and appear set to go higher, with talk of a correction, prevalent a few weeks ago, gone.

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Think of it as a more passive aggressive version of those violent parent outbursts that were so prevalent a decade ago.

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While unions may become more prevalent, a repeal of mandatory bargaining and exclusive representation would cause them to change their bargaining techniques.

FORBES: Reinventing Unions for the 21st Century