英语释义
1. something added on: such as
2. a sum or amount added on
3. something (such as an accessory or added feature) that enhances the thing it is added to
computer hardware add-ons
4. being or able to be added on
an add-on device
5. able to be added to
add-on certificates of deposit
6. an extra part or device that can be added to something else to improve it
7. being or able to be added on
add-on no-fault benefits