Psychologists have long held that a person's character cannot undergo a transformation in any meaningful way and that the key traits of personality are determined at a very young age.

心理学家长期以来一直认为，一个人的性格不可能以任何有意义的方式发生转变，性格的关键特征在很小的时候就已经决定了。

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By Western standards the young workers still have it tough, with long hours and few rest days.

按照西方的标准，年轻的工人们仍艰苦的，长时间的，几乎无休的工作着。

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They are young people from the country who have never been away from home, working long hours, and feeling alone and vulnerable.

这些年轻人从农村中出来，可能之前从未离家这么远，长时间的工作，使他们感觉孤独和容易受到挫折。

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Still,law enforcement officials have long warned about the dangers of young people being identified by adults wishing to harm them.

VOA: special.2009.02.03

The male brains, especially nerve cell rich parts of the brain associated with thinking and remembering, seemed to have sustained more long term damage from high lead levels than the brains of the young women.

VOA: standard.2009.12.19

But most of those young Reaganauts have long since taken the lobbying industry's dollar.

ECONOMIST: The only people who could stop a Bush second term

Escobar believes that attitude change is what will help these young mothers have long-term success.

CNN: Giving teen moms the tools to change their lives

Young founders have long loomed large in Silicon Valley.

WSJ: Age Rises for Some Tech-Firm Founders