1. The doctor performed a bone marrow transplant to treat the patient's leukemia.
医生进行了一次骨髓移植手术，以治疗病人的白血病。

2. The bone marrow is responsible for producing red and white blood cells.
骨髓负责产生红细胞和白细胞。

3. The earthquake caused the building's marrowbone to collapse.
地震导致建筑物的骨架倒塌。