| 释义 |
DEFINITIVE EXAMPLES 权威例句〔bone marrow〕The soft, fatty, vascular tissue that fills most bone cavities and is the source of red blood cells and many white blood cells.骨髓：大部分骨腔中柔软、脂肪状的脉管组织，是红血细胞和许多白血细胞的源头美国传统〔eustele〕The central cylinder in which the primary vascular tissue is arranged around a pith, as in most seed plants.真中柱：一种管状中柱，其中初生脉管组织排列在髓孔周围，存在于大多数种子植物中美国传统〔fibrovascular〕Having fibrous tissue and vascular tissue, as in the woody tissue of plants.维管（组织）的：含有纤维组织及脉管组织的，如在植物的木质组织中美国传统 |