mental age

音标发音

Brooke Greenberg, who will be old enough to vote next year, has failed to develop physically or mentally and remains just 30 inches tall with a mental age of a one-year-old.
明年，布鲁克·格林伯格就可以参加选举了，但她的身体却只有30英寸，思维相当于一个一岁的婴儿。
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。
A guy whose physical age does not match his mental age.
一个生理年龄和心理年龄不匹配的家伙。

At the end of the week, At the end of the week, both mental and biological age decreased.
在一周结束时，在一周结束时，心理和生理年纪都减小了。
哈佛公开课 - 幸福课课程节选

The Disney-sounding financial prodigy is deemed, at 11, to have the mental age of the average American adult.
ECONOMIST: William Gaddis
One man with a mental age of nine has a vast memory for foreign words and the use of grammatical endings, but he cannot seem to break free of English word-order.
ECONOMIST: What makes some people learn language after language?

A person's mental age is a measurement of their ability to think when compared to the average person's ability at that age.

A person's mental age is the age which they are considered to have reached in their ability to think or reason.