士兵用盾牌挡住了敌人的攻击。

The soldier used his ___shield to block the enemy's attack.

这堵墙可以作为抵御强风的屏障。

This wall serves as a ___shield against strong winds.

安装机器时别忘了装上防护罩。

Don't forget to install the protective ___shield when setting up the machine.

骑士的盾牌上刻有十字架图案。

The knight's ___shield was engraved with a cross.

神盾局负责保护世界免受超自然威胁。

___SHIELD is responsible for protecting the world from supernatural threats.