- 同反義
同義詞
1. a thing that is added or attached to something larger or more important
- addition
- , attachment
- , adjunct
- , addendum
- , appurtenance
- , accessory
- , accompaniment
- , affix
- , extra
- , add-on
- , supplement
- , accretion
- , peripheral
2. a projecting part of an invertebrate or other living organism, with a distinct appearance or function
