Helical staircase
01
螺旋階段, ヘリカル階段
a type of staircase that follows a continuous curve or helix shape, providing a graceful and visually appealing design for vertical circulation
文法情報
有生性の状態
無生物
形態的構成
複合語
可算
singular
not gender specific
複数形
helical staircases
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