phyllary

例句：

1. 1. The flower has a phyllary that protects the petals.
   这朵花有一个保护花瓣的花萼。
2. 2.The plant's phyllary is a key to its survival.
   这种植物的花萼是其生存的关键。
3. 3. The scientist studied the structure of the phyllary in order to understand how it functions.
   这位科学家研究了花萼的结构，以了解它如何工作。