dual-主題

dual

['dju:əl]

adj.雙重的, 成雙的 
n.雙數

例句與用法：

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。

The road opened out into a dual carriageway.

這條路已擴展成了複式車行道。

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。

She has dual nationality.

她有雙重國籍。

詞形變化：

副詞: dually |

英文解釋:

形容詞 dual:

consisting of or involving two parts or components usually in pairs

同義詞：double, duple

having more than one decidedly dissimilar aspects or qualities-Frederick Harrison

同義詞：double, twofold, two-fold, treble, threefold, three-fold

a grammatical number category referring to two items or units as opposed to one item (singular) or more than two items (plural)

以上來源於大辭典