您要找的是不是：
n. 子树
n. 鞋楦
皂树油
The soaptree yucca plant can make its stem grow longer to keep its leaves above the sand.
VOA : special.2010.01.04
soaptree:
soap +? tree
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。