You're too young to get picked up by the police.
你太年轻，警察不会逮捕你的。
----------------------------------------------------------------------
Pick sb.up,带走，逮到。还有更多意思。
例1：
That is the girl Tom picked up on the street.
那个女孩是汤姆在街上遇到的。
例2：I stopped the car and picked up the old man who is walking across the plain.
我停下车来再载上那个在平原上走的老人。