Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.
造血-骨髓位于长骨髓腔和松质骨间
内，骨髓通过造血作
血细胞。
,裂缝,形成空;
口;洞;;区域;;Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.
造血-骨髓位于长骨髓腔和松质骨间内，骨髓通过造血作血细胞。
There is a gleam of luminous gold, where the sinking western sun has found a first direct interstice in the clouds.
从西落太阳在云层里发现
一个直接空处，透出一缕金光。
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