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mental age

noun
🔊/ˈmentl eɪdʒ/
🔊/ˈmentl eɪdʒ/
[countable, usually singular]
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  1. mental age (of something) the level of somebody’s ability to think, understand, etc. that is judged by comparison with the average ability for children of a particular age智力年龄；心理年龄
    • She is 16 but has a mental age of 5.她今年16岁，但智力年龄为5岁。
    compare chronological age