roundness
n. 圆；球形
例句
His face had lost its boyish roundness.
他的脸已不是小时候那副圆圆的娃娃脸了。
《牛津词典》
But then again,what is the apple once you take away its roundness, redness, etc.?
但话又说回来，一旦你拿走苹果的圆的形状和红的颜色等，那么到底什么是苹果？
It should also be straight and not too curvyto downplay the roundness of the face.
眉毛线条也可以是直的，不用过于弯曲使脸显得不那么圆。
