在年龄构成比例上学龄前期占的比例最高，达52.5%。

The proportion of pre-school age constitute the highest proportion of total, up 52.5%.

youdao

在年龄构成比例上学龄前期占的比例最高，达52.5%。

The proportion of pre-school age constitute the highest proportion of total, up 52.5%.

youdao