useful life
noun
The (expected) period of time in which a device, vehicle, structure, etc., is productive or in use.
Origin
Mid 19th century.
| 单词 | useful life |
| 释义 | useful lifenoun The (expected) period of time in which a device, vehicle, structure, etc., is productive or in use. Origin |
| 随便看 |
英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。