irregular

a jagged, irregular coastline.锯齿状不规则的海岸线

It has a highly irregular shape, covered in bumps and indentations..它的外形极不规则，满是凸起和凹陷的地方。

irregular menstruation月经不调

irregular wave[化]不规则波

irregular verb不规则动词

真题例句...then it would react to the irregular beeps by stirring people from sleep and would ignore the regularly timed ones...CET42017.12阅读理解