add-on

• 名词，指添加到某物上以改善或扩展其功能或能力的附加组件或附加功能。

A noun referring to a supplementary component or feature that is added to something to improve or enhance its functionality or capability.

1. Supplementary componentB1formal

   A component or feature that is added to something to improve its functionality or appearance.

   附加组件

   • The software has several useful add-ons for editing photos.
   • You can purchase an add-on to extend the warranty of your device.
   • This browser add-on blocks annoying advertisements.

   同义词accessoryadditionadjunctappendageattachmentextensionextrasupplement

2. Extra feature or upgradeB1informal

   An optional extra item or service that enhances the basic version of a product.

   附加功能

   • The car comes with an add-on for a premium sound system.
   • We offer a variety of add-ons for your vacation package.
   • The game's add-on includes new levels and characters.

   同义词accessoryadditionadjunctappendageenhancementextensionextrasupplementupgrade