使其实际使用寿命与设计寿命出现较大偏差。的翻译：The deviation between the actual service life and larger design life. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

To the actual service life and design life of a larger deviation.

The deviation between the actual service life and larger design life.

Causes its physical life and the design life appears the big deviation.

To enable its actual life design life with a larger deviation.

The deviation between the actual service life and larger design life.