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骨髓是骨骼中一种柔软的、海绵状的组织。
Marrow is a soft, spongy tissue inside bone.
youdao
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骨髓是一种海绵状组织，是血细胞发育的源场所。
Marrow is the spongy tissue where blood cell development takes place.
youdao
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骨髓是一种海绵状组织，是血细胞发育的源场所。
Marrow is the spongy tissue where blood cell development takes place.
youdao