Bone marrow's a soft and spongy tissue found inside some bones.

骨髓是一些骨头内部柔软而呈海绵状的组织。

Bone marrow is the spongy tissue inside your bones where your blood cells are created.

骨髓是骨头内部制造血细胞的海绵状组织。

When they build their matrix around them, they're making the spongy tissue that forms your nose and ears and cushions your joints.

当它们在周围形成基质时，它们正在制造海绵组织，形成你的鼻子和耳朵，并缓冲你的关节。

This spongy tissue is strong, but porous, even to the naked eye, and it uses this extra room to make and store bone marrow.

这种海绵状组织坚固但多孔，甚至肉眼可见，它利用这个额外的空间来制造和储存骨髓。