Their undulating flight, the grace of their aerial curves, and the play of their colors allured and delighted the eye.

它状起伏飞行，它在空中优美曲线，它鲜艳夺目色泽，吸引和迷惑人眼睛。

According to the authors, asperitas clouds are  defined by their rough, somewhat wavelike cloud base, that lacks the smooth undulating shape of  the (possibly related) undulatus cloud type.

根据作者说法，阿佩里塔由其粗糙、有点状底来定义，它缺乏（可能相关）状类型光滑起伏形状。