详细解释:a. 就学前的
n. 育幼院, 幼稚园
英语解释：
名词 preschool:
an educational institution for children too young for elementary school详细解释：
pre.school
adj.（形容词）Of, relating to, intended for, or being the early years of childhood that precede the beginning of elementary school.学龄前的，入学前的：在小学教育开始之前即儿童时代早期的，与这有关的或为此服务的n.（名词）
A school for children who are not old enough to attend kindergarten; a nursery school.保育园：为年龄未够上幼儿园的儿童服务的学校；托儿所