花萼的

例句：

1. 1. The flowers have delicate petals and a fragrant corolla.
   这些花朵有娇嫩的花瓣和芬芳的花冠。
2. 2. The plant's petals are the first visible part of its flower, followed by the sepals and finally the stamens.
   植物的花瓣是其花的最显眼部分，其次是萼片，最后是雄蕊。
3. 3. The scientist carefully observed the structure of the plant's petals andsepals.
   这位科学家仔细地观察了植物花瓣和萼片的结构。