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- supernumerary cambium layer 额外形成层
- The secondary xylem of tuberous root is well developed,and there is supernumerary cambium around the vessels. 块根的次生木质部发达，导管周围存在额外形成层。
- Acropetal differentiation of the cambium layer continues as the primary root elongates. 形成层的向顶分化像初生根伸长一样在继续进行。
- The growth of hypogeal stem contain tri-growth, and the anomalous secondary growth is the result of supernumerary cambium that derived from the outmost elements of secondary phloem. 地下茎加粗过程中形成三生结构，其异常结构是由于次生韧皮部外侧发生的额外形成层所致，其起源于薄壁细胞；
- Vascular bundle have not cambium layer, vessel, and spiral tracheid as well.Only sieve element. 维管束无形成层，无导管，也不具有螺纹管胞，只有筛分子。
- For the mesenchymal stem cell marker profiles, cambium layer and cartilage layer all expressed higher chondroprogenitor related marker profiles. 在细胞表面标志上，年轻与成年兔形成层及软骨组织表现较多具软骨分化潜力之细胞标志。
- For the cell morphology in vitro, fibrous layer cells presented as fibroblast-like shape;cambium layer showed fibroblast-like and polygonal appearance;cartilage layer only demonstrated polygonal ones. 由实验结果可知，在细胞型态上，年轻与成年兔纤维层细胞呈现类纤维母细胞型态，软骨组织的细胞型态为多角型，而形成层的细胞型态则两者均有。
- This layer of rock contains a lot of flint. 这一岩层中有大量燧石。
- acropetal differentiation of the cambium layer continues as the primary root elongates 形成层的向顶分化像初生根伸长一样在继续进行。
- The inner layer of the wall of a spore. 孢子内壁孢子壁的内层
- There is a fine layer of dust on the desk. 桌子上有一层薄薄的尘土。
- The middle, usually fleshy layer of a fruit wall. 中果皮果皮中间通常含肉较多的那一层
- The bottom layer is a mixture of sand and clay. 最下面的一层是沙和泥的混合物。
- A fine layer of dust covers everything. 所有的东西都盖了一层薄薄的灰尘。
- A tissue produced inwardly by the cork cambium. 栓内层在内部由软木新生层产生的组织
- A layer, as of doubled-over cloth or of paperboard. 一层一层，如折叠过的布料或纸板的
- A tissue produced inwardlyby the cork cambium. 栓内层在内部由软木新生层产生的组织。
- A surface, layer, or mass of frozen water. 冰面冻结的水的面、层或块
- A thin layer of bone, membrane, or other tissue. 骨骼、粘膜或其它组织的薄层
- A thin, flat layer or scale, as that of a fish. 外表组织薄而平的一层或鳞状物，如鱼鳞
