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1·She is sixteen but has a mental age of five.

她十六岁，而智力年龄是五岁。《牛津词典》

2·She is sixteen years old but has a mental age of five.

她十六岁，而智力年龄是五岁。

3·Improve your mental age through daily exercise and play in story mode from a male or female perspective to explore several possible endings.

从多种角度来看你的心理年龄，探讨多种可能的结局，游戏有多种不同的模式。

4·IQ - a number used to express the apparent relative intelligence of a person that is the ratio multiplied by 100 of the mental age as reported on a standardized test to the chronological age.

智商-很多用来描述一个人的智力明显相关的比例乘以100的心理年龄在标准化测试报告，按时间顺序写的年龄。

5·There are steps you can take to help reduce abdominal fat and maintain lean muscle mass as you age in order to protect both your physical and mental wellbeing.

你可以在年龄增长的过程中采取一些措施来减少腹部脂肪，保持精瘦肌肉含量，从而维持你的身心健康。

6·As we move from the industrial age to the information age, societal demands on our mental capabilities are no less taxing.

随着我们从工业时代过渡到信息时代，社会对我们的思维能力的要求也越来越高。

7·Declining mental function is often seen as a problem of old age, but certain aspects of brain function actually begin their decline in young adulthood, a new study suggests.

心智功能衰退通常被视为老年问题，但一项新的研究表明，大脑功能的某些方面实际上在青年时代就开始衰退了。

8·That's the promise of Nintendo's Brain Age, which claims to “help train your memory and keep your mind sharp” through reading exercises, math puzzles, and other mental gymnastics.

这正是任天堂公司的《大脑时代》的承诺，这款游戏声称，阅读练习、数学题及其他脑力体操，可以“有助于训练你的记忆力，保持思维敏锐”。

9·Each study volunteer filled out a detailed questionnaire describing their health and mental status annually, and all participants retired by the age of 64.

每个志愿人员填写了详细的问卷描述他们的健康状况和精神状况，并且所有人都在64岁退休。

10·More than 13% of young Americans between 14 and 17 years of age considered suicide in 2000, according to the report from the us Substance Abuse and Mental Health Services Administration (SAMHSA).

根据美国物质滥用与心理卫生服务部(SAMHSA)的报告，2000年，美国14至17岁的青少年中有超过13%的人曾想过自杀。