calycular

例句：

1. 1. The calyx is the outer protective layer of a flower.
   花萼是花朵的外层保护层。
2. 2. The calyx protects the stamens and pistils from the elements.
   花萼保护雄蕊和雌蕊免受外界环境的影响。
3. 3. The calyx is where the pollen grains are stored before they are released to fertilize the pistil.
   花萼是花粉粒储存的地方，在它们释放以授粉雌蕊之前。