a component or accessory added to something after it has been manufactured
the act of adding a component or accessory to something that did not have it when it was manufactured
provide with parts, devices, or equipment not available or in use at the time of the original manufacture
fit in or on an existing structure, such as an older house
substitute new or modernized parts or equipment for older ones
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。