| 释义 |
cambium
['kæm.bi.əm] noun countable or uncountable (plural cambiums or cambia) specialized
■a layer in the roots and stems of woody plants, made of cells that divide to produce new tisssue such as xylem and phloem 形成层（木本植物根部和茎部的细胞层，其透过细胞分裂形成新的组织，如木质部和韧皮部） |