FAQs About the word twofold

雙重

having more than one decidedly dissimilar aspects or qualities, twice as great or many, by a factor of two

單身,未配對

twofer => 兩個, two-faced => 兩面派, two-eyed violet => 雙眼紫羅蘭, two-dimensionality => 二維性, two-dimensional figure => 二維圖形,