| 单词 | 边材 |
| 释义 | 〔heartwood〕The older, inactive central wood of a tree or woody plant, usually darker and harder than the younger sapwood. Also called duramen 心材，树干：树木或木本植物中较老的不再生长的部分，通常比树龄短的边材更硬且颜色更深 也作 duramen〔sapwood〕Newly formed outer wood that lies just inside the cambium of a tree trunk and is usually lighter in color and more active in water conduction than the heartwood.边材：树木的树干形成层内的新生木质，通常色泽较浅，传导水分比树心部更为活跃 |
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