在这些“免费”资源的正当使用方面，存在一些默认的协定。

There are tacit agreements governing the fair use of these "free" resources.

youdao

“正当使用”在没有任何特殊许可下都是允许的。

"Fair use" is use that is allowed without any special permission.

youdao

不明飞行物的报告没有(值得)抵御防卫的价值，这是对防卫资源的不正当使用。

There is no defense benefit in such investigation and it would be an inappropriate use of defense resources.

youdao