This is the age group when children are first expected to study hard and parents have great expectations of their progress in school.

在这个年龄段，孩子会先被要求努力学习，父母对他们在学校的进步有很高的期望。

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This recommendation includes all children under the age of five years, as this age group is at increased risk of more severe illness.

这一建议包括五岁以下的所有儿童，理由是这个年龄组的儿童面临着罹患更为严重病症的较高风险。

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A short course of oral prednisolone is widely used to treat preschool children with wheezing who present to a hospital, but there is conflicting evidence regarding its efficacy in this age group.

治疗前来医院就诊的患有喘鸣的学龄前儿童广泛应用短期口服泼尼松治疗，但是，关于这个年龄组的治疗效果有相反的证据。

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This represents almost half of the children in this age group.

UNESCO: Social and Human Sciences

Only a third of this group (125 children) still had a problem at the age of 10.

BBC: Doctors could predict which children are at risk of asthma

Of note, more than one third of the injured children in this study were less than 6 years of age-the age group for which the Consumer Product Safety Commission (CPSC) recommends against trampoline usage.

FORBES: Inflatable Bouncer-Related Injuries Sharply Increase in the U.S.