prescutellum

例句：

1. 1. The flower's prescutellum is a striking feature.
   这朵花的前唇瓣是一个引人注目的特征。
2. 2.The plant's prescutellum is responsible for its pollination.
   这种植物的前唇瓣负责其传粉。
3. 3.The artist carefully preserved the prescutellum of the painting to preserve its authenticity.
   这位艺术家小心翼翼地保留了这幅画的前唇瓣，以保持其真实性。