irregular contour

例句：

1. 1.The irregular growth pattern of the plant is a puzzle to scientists.
   这种植物不规则的生长模式对科学家来说是个谜。
2. 2. The irregularities in the data led to a delay in the project's completion.
   数据中的不规则性导致项目延期。
3. 3. The irregularities in the schedule made it difficult for us to meet the deadline.
   时间表的不规则性使我们难以在截止日期前完成任务。