While walking in the street or on the roadside , children of pre-school age must be led by an adult .
While walking in the street or on the roadside , children of pre-school age must be led by an adult .
学龄前儿童上街或在公路边行走时须有成年人带领！
While walking in the street or on the roadside , children of pre-school age must be led by an adult .
学龄前儿童上街或在公路边行走时须有成年人带领！