preadolescence

pre.ad.o.les.cence

n.（名词）
The period between childhood and the onset of puberty, often designated as between the ages of 0 and 2 in girls and and 3 in boys.
青春前期：从儿童到青春期开始这段时间，年龄上女孩通常认为是从0岁到2岁，而男孩则通常从岁到3岁

【引伸】
pre.adoles.cent
adj.（形容词）
n.（名词）