护的英文是什么

　　例句：

　　He clanged his sword three times on his shield.

　　他用他的剑当当当地敲了3下盾。

　　The gunman used the hostages as a human shield.

　　持枪歹徒用人质作人体盾牌。

　　The police officer fended off the blows with his riot shield.

　　警察用防暴盾牌抵挡攻击。