He can belt you with that shield, and if he's stronger than you are, or better prepared or more balanced than you are, he could knock your shield out of your hand.

他能用盾牌猛击,如果他比你强壮,或准备充分,或平衡能力比你强的话,他能将你的盾牌击飞

耶鲁公开课 - 古希腊历史简介课程节选