士兵用盾牌挡住了飞来的箭矢。

The soldier used his ___shield to block the incoming arrows.

这种特殊的涂层可以作为一种防护层，阻挡有害的化学物质。

This special coating acts as a ___shield against harmful chemicals.

这个电子设备有一个金属外壳来保护内部电路。

This electronic device has a metal ___shield to protect its internal circuits.

父亲用身体为孩子挡住了飞来的足球。

The father ___shielded his child from the flying soccer ball with his body.