Spirocyclane
螺环烷(专指：螺戊烷)
🗣️ 情景例句
A journey of a thousand miles begins with a single step.
千里之行，始于足下。
To make his hairdo
做头发
The towers are built on immense underwater platforms make of steel and concrete.
塔身建在巨大的水下钢盘混凝土平台上。