yī / shēng / tōng / guò / jiǎn / chá / gǔ / suǐ / lái / pàn / duàn / huáng / gǔ / suǐ / shì / fǒu / fā / shēng / le / yì / cháng / biàn / huà

医生通过检查骨髓来判断黄骨髓是否发生了异常变化。

The doctor examined the bone marrow to determine whether the yellow marrow had changed abnormally.