narrow resource的用法和样例：
例句
- Often people treat approval as though it were a severely limited resource.
往往人们把认可当成似乎那是一种极其有限的资源。 - As our knowledge is limited, we always think unconsciously that our body is a resource without being paid for, and we know little about our body before getting illness or death.
也因为，每个人的知识总是有限的，我们无意识地认为，身体是无偿使用的资源，对自己生病和死亡之前的身体状况了解甚少。
