infantile

infantile: [ 'infəntail ]

a. 婴儿的,幼稚的,初期的

例句与用法:
1. Her unconscious looks wander to her husband with infantile dependency.
带著像婴儿般的依赖她不由自主地把目光投向了她的丈夫。

2. An adult or a young person who behaves in an infantile way.
孩子气的人行为表现出孩子气的成年人或年轻人

英英解释:
形容词infantile:

1. indicating a lack of maturity
同义词：childish

2. of or relating to infants or infancy

3. being or befitting or characteristic of an infant

哪方面啊?