bounce v cause sb to move up and bown in a lively manner 使某人活跃地上下跳动
He bounced his baby on his knee.他把婴儿放在膝上颠着玩.
bounce n 活力,生气.
bounce baby out the door 这句话的意思可能是；小孩蹦蹦跳跳地出了门.