An ellipse is an asymmetrically shaped closed oval.

任何椭圆都是对称封闭的椭圆形。

And because many owls' ears are positioned asymmetrically, sound waves reach them at different times.

而且由于许多猫头鹰的耳朵位置不对称，接收到的声波时间也是不同的。

This concept is evident in the unpretentious beauty of a Japanese tea house or an asymmetrically arranged ikebana flower arrangement.

这个概念在日本茶馆或不对称排列的花道插花的朴实之美中显而易见。