columellae

例句：

1. 1. The flowers have delicate petals that attract bees.
   这些花朵有着精致的花瓣，吸引蜜蜂。
2. 2. The bud is surrounded by soft sepals that protect the flower.
   芽被柔软的花瓣包围，保护着花朵。
3. 3.The plant's growth depends on the development of its columellae.
   植物的生长依赖于花萼的发展。