Ideas about social class—whether a person is "working-class" or "middle-class"—are one area in which changes have been extremely slow.

关于社会阶级的观念，判断一个人是“工人阶级”还是“中产阶级”，这是一个极其缓慢的变化过程。

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This is a Slow Family Living class, taught by perinatal psychologist Carrie Contey and Bernadette Noll.

这是一堂“缓慢家庭生活”课，教授者为围产期心理学家卡利康缇和伯纳黛特·诺尔。

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It is quite usual for a slow reader to double and even triple his reading efficiency during a two-day class offering a positive atmosphere, carefully selected texts and comprehension tests.

通过提供积极的气氛，经仔细挑选的文章一级理解力测试，这样一个持续两天的课程将慢速读者的阅读速度提高到原来的两倍甚至三倍，是很常见的。

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Now we're going to I'm going a bit slow here but I'm going to use this method next time to introduce you to the most important class, sorry, the most important game we're going to see in the whole course.

接下来我们,我放慢一点,在下一讲我还要用这个方法,我要向大家介绍最重要的课程,抱歉,是整个课程中最重要的博弈

耶鲁公开课 - 博弈论课程节选

Michael Clarke's five overs of spin were safely negotiated - Australia's lack of a high-class slow bowler would become rudely exposed by the end of the day - and it was a surprise when the third wicket fell.

BBC: Indian batsmen defy Australians

The warning given by the article was tentative but it caused growth of the entire class to slow, and Vioxx sales growth stalled.

FORBES: Magazine Article

It will not create any jobs, raise any wages, reduce the crushing debts of the middle class, slow the wave of foreclosures, conserve energy or reduce the price of gas.

CNN: Obama needs more than symbolism of 'Buffett Rule'