accessory

addition, appendix, attachment, supplement, accessory

这些名词均含“附加物、增加物”之意。
addition: 仅强调数量的增加。
appendix: 指书末的附录。
attachment: 指用于扩大原物用途的附件。
supplement: 主要指使书、报等正文更完善而额外增加的部分。
accessory: 作“附件”解时，与attachment同义，可互换，但还指增加美观的附属品。

名词 accessory:

1. clothing that is worn or carried, but not part of your main clothing
   同义词：accoutrement, accouterment
2. a supplementary component that improves capability
   同义词：appurtenance, supplement, add-on
3. someone who helps another person commit a crime
   同义词：accessary

形容词 accessory:

1. furnishing added support
   同义词：adjunct, ancillary, adjuvant, appurtenant, auxiliary, subsidiary

1. Every item shall include a standard complement of accessories and special tools to ensure the normal operation.
   为保证设备的正常运转，每个品目都应包括一套标准定额的附件和专用工具。
2. He is Tom's accessory.
   他是汤姆的帮凶。
3. He asked me to buy him some accessories for a car.
   他让我给他买些汽车附件。