学龄前的孩子真的不懂这个故事的寓意。
当学龄前的孩子看到如数字和字母的字符时，在一定程度上，他们会理解。
When preschool children see symbols such as Numbers and letters, they perceive them in parts.
尽管孩子学龄前的需求要难得多，十几岁孩子时多时少的需求也有自己的挑战。
While the demands of the preschool years were far harder, the waxing and waning of teen 'needs impose challenges of their own.
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