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。
