a suit of armor的用法和样例：
- The knight wore a suit of armor to shield himself from attack.
- The imperturbability of the mountains hung upon him like a suit of armor.
- A piece of mail or plate armor protecting the joints in a suit of armor.
- A suit of armor imbued with this property never tarnishes and is immune to acid damage and rusting effects.
- A suit of armour fell over with a loud crash.
- He wears a suit of quilted flexible blast-dampening multi-ply padding, and a cloak of armor weave.