paracorolla

例句：

1. 1. The paracorolla of the rose is a striking feature.
   玫瑰的副花冠是一个引人注目的特征。
2. 2.The paracorolla is made up of several layers of petals.
   副花冠由几层花瓣组成。
3. 3. The paracorolla is often used as a decorative element in floral arrangements.
   副花冠常用于花卉布置中作为装饰元素。