该质量保证不包括自然磨损和破裂以及由不正当使用引起的损坏。
The warranty does not cover natural wear and tear and damage arising from improper use.
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.
梯子、鹰架和安全带的不正当使用、操作，甚至不用，均会造成严重的事故和伤害。
Serious incidents and injuries may result from misuse, mishandling, or abuse of ladders and scaffolds and from failure to use safety harnesses where required.
应用推荐