dual

詞型變化：

英文解釋：

形容詞 dual:

1. consisting of or involving two parts or components usually in pairs
   同義詞：double, duple
2. having more than one decidedly dissimilar aspects or qualities-Frederick Harrison
   同義詞：double, twofold, two-fold, treble, threefold, three-fold
3. a grammatical number category referring to two items or units as opposed to one item (singular) or more than two items (plural)

英文造句：

1. He has a dual interest in the football team; he's the trainer and his son plays for them.
   他跟那個足球隊有雙重關係，他是足球隊教練，他的兒子是隊員。
2. The road opened out into a dual carriageway.
   這條路已擴展成了複式車行道。
3. His dual role as a composer and a conductor made him very busy.
   他作曲家和指揮家的雙重身份使他非常繁忙。
4. She has dual nationality.
   她有雙重國籍。