surangulare

例句：

1. 1. The shape of the moon is irregular, with its craters and valleys.
   月球的形状不规则，有其陨石坑和山谷。
2. 2.The painting is asymmetrical, with one side being darker than the other.
   这幅画是不规则的，一边比另一边暗。
3. 3. The sculpture is irregular, with some parts appearing to be missing.
   这个雕塑是不对称的，有些部分似乎缺失了。