Kathy Sylva, professor of educational psychology at Oxford University, reached her conclusions from a study of 3,000 children from the ages of three to five.

牛津大学教育心理学教授凯西·西尔瓦通过对3000名3至5岁儿童的研究得出了她的结论。

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Parents completed questionnaires about the food and drink consumed by their children at the ages of three, four, seven and eight.

在调查中家长被要求填写有关他们孩子在三、四、七和八岁期间的食物和饮料消费问卷。

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Preschool was available to children between the ages of three and six; it was obligatory from age five.

三至六岁之间的孩子需接受学前教育。 从五岁开始教育是强制性的。

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Mattel says ninety percent of girls in the United States between the ages of three and ten own at least one Barbie doll.

VOA: special.2009.04.06

It involved about three thousand four hundred uncircumcised Ugandan men between the ages of fifteen and forty-nine.

VOA: special.2009.04.01

It says girls between the ages of three and six own an average of about twelve.

VOA: special.2009.04.06

They have not yet confirmed the names or ages of the three women, but a police spokesman told CNN the victims were in their 30s.

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Motor vehicle collisions remain the leading cause of death for individuals between the ages of three and 34.

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The profile has been designed to accommodate the on-entry assessment of children between the ages of three and five.

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