原级：exsert
第三人称单数：exserts
过去分词：exserted
过去式：exserted
1. The flowers present a opening pore on the top of twin stylus, while stigma exserting. 细胞学鉴定结果：花丝短，柱头、花柱和果柄长，双花柱外露时花的顶部有一小孔，呈开放状。