Scientists also used to believe stuttering developed in some children in reaction to parents reprimanding them if they repeated words or sounds while learning to speak.

科学家还曾认为，有些孩子学说话时，因为不断重复某些词或声音被父母指责，就开始口吃。

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We applied modern science to some of the most often repeated words of old fashioned wisdom.

我们利用现代科学对人们常挂在嘴边的一些老生常谈进行了检验。

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By the end of their first year, most babies understand quite a few frequently repeated words.

在将近一周岁时，大多数宝宝都理解不少经常(向他们)重复的词。

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Lincoln repeated the words. And the United States had a new president.

VOA: special.2009.07.30

Those incessantly repeated words became one of the most familiar phrases in the land.

CNN: Winky Dink and ... Bill Gates?

He looked at the others and solemnly repeated my words.

NPR: Excerpt: 'Trauma'

He repeated those words at Monday's public inauguration, placing his left hand on Bibles owned by legendary American civil rights leader Martin Luther King Jr and President Abraham Lincoln.

BBC: Inauguration: Barack Obama is sworn in for second term