详细解释:n. 长生草属植物
详细解释：
house.leek
n.（名词）Any of various plants of the genusSempervivum native to the Old World, especially S. tectorum, having a persistent, basal rosette of fleshy leaves and a branching cluster of pinkish or purplish flowers. Also called live-forever ,old-man-and-woman 长生草属植物：长生草属 植物，产于欧洲大陆，尤指 屋顶长生草 ，具有不落的肥厚叶片，叶片的底部呈莲座型，有淡粉色或淡紫色的分枝花簇 也作 live-forever,old-man-and-woman