这里的海岸线不规则，有许多海湾和半岛。

The coastline here is ___irregular, with many bays and peninsulas.

匆忙中，我没看到不平整的地板，结果摔倒了！

In my hurry, I never saw the ___irregular floor and I fell over!

艺术家在他的抽象画中使用了不规则的形状。

The artist used ___irregular shapes in his abstract painting.