largest bone
最大的骨头
以上为机器翻译结果，长、整句建议使用 人工翻译 。
This might be one reason why India, the world's second-largest nation, has a bone marrow registry of 39, 000 people, according to DATRI, a nonprofit organization which drives and maintains registries worldwide.
CNN: My mom needs you: Nalini's story
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