not shaped like a circle

This part has a highly irregular and non-circular shape. 这部分具有高度不规则和非圆弧形状。

The painting consisted of a single, noncircular blob. 这幅画上只画着一个不圆的点。

A non-circular argument is effective because it does not keep returning to the same points.

It is impossible to produce a non-circular justification of this principle. 不可能对这一原则做非循环论证。

Ideally, the analysis will be non-circular and informative. 理想情况下，分析应该是直接有效且能提供有用信息的。