Babies who persistently cry are more likely to become problem children with behavioural disorders, researchers say.

研究人员称，哭闹不止的婴儿更有可能成为行为有障碍的问题儿童。

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Every region has its success stories and its problem children with regard to the plant varieties installed in a project.

关于安装在一个项目中的植物品种，每个区域都有它的成功范例和问题案例。

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In parts of South America, vitamin-A deficiency is a serious health problem, especially among children.

在南美部分地区，缺乏维生素 A 是一个严重的健康问题，尤其在儿童之中。

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This is a common problem for millions of children around the world and not just at school, but also at home.

VOA: special.2009.12.21

Piaget was really big into question and answer, but one problem with this is that children aren't very good with language, and this might lead you to underestimate how much they know.

皮亚杰非常热衷用问与答的方法进行研究,但这里存在的一个问题便是,儿童并未能完全掌握语言,这可能会导致你低估他们的理解能力

耶鲁公开课 - 心理学导论课程节选

He says many parts of the world are doing too little to correct the problem of lead poisoning in children.

VOA: special.2009.08.31

They included the problem children of every neighborhood as well as students and factory workers.

NPR: Excerpt: 'World War II Writings'

But it is neither a school for problem children nor a tutoring service, she says.

BBC: "Good morning everyone," says the teacher.

To Main Street any Wall Streeter who buys up problem children companies is labeled a Vulture these days.

FORBES: Hedgie David Tepper stands up for Vulture Investing