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-骨长骨腔和松质骨间隙内，骨通过造作用产生细胞。

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一个直接空隙处，透出一缕金光。