Doctors soon began the search for a bone marrow donor.

医生们立即开始寻找骨髓捐赠者。

youdao

Secondly, to find suitable bone marrow donor is not easy.

其次，找到合适的骨髓捐赠者并非易事。

youdao

Secondly, to find suitable bone marrow donor is not easy.

其次，找到合适的骨髓捐赠者并非易事。

youdao