Red marrow is the stuff that makes blood cells, so you should be glad that you have some of that.

红骨髓是制造血细胞的物质，所以你应该很高兴你有一些红骨髓。

But in some of your classic long bones, like the femur and humerus, the spongy bone and its red marrow are concentrated at the tips.

但是在你的一些经典长骨中，比如股骨和肱骨，海绵状骨及其红色骨髓集中在尖端。

Blood cell production: Red marrow in certain bones is capable of producing blood cells, a process called hematopoiesis or hemopoiesis.

某些骨骼中的红骨髓能够生成血细胞，这个过程称为造血作用或血细胞生成。

Red marrow consists of blood cells in immature stages, fat cells, and macrophages. Red marrow produces red blood cells, some white blood cells, and platelets.

红骨髓由未成熟阶段的血细胞、脂肪细胞和巨噬细胞组成。红骨髓产生红细胞、一些白细胞和血小板。