N (in liverworts) any of the leaves forming a row on the underside of the stem: usually smaller than the two rows of lateral leaves and sometimes absent 腹叶
underleaf cover叶背覆盖层
Underleaf pearl叶下珠
underleaf discharge叶背面散布
underleaf spraying叶背喷雾
Underleaf Pearl Extract叶下珠提取物
N（名词） (in liverworts) any of the leaves forming a row on the underside of the stem: usually smaller than the two rows of lateral leaves and sometimes absent 腹叶