For example, children depried of normal isual stimulation during an early critical period of the first few years of life suffer the permanent isual impairment of amblyopia. 例如,儿童在属于早期临界期的婴幼儿阶段被剥夺正常视觉刺激,就会患上弱视,导致永久性的视力缺损。
Childhood is a key period for children to form their adult psychology and human features. 摘要儿童时期是形成成人心理及人格特徵的关键期。