UNabbr.(=United Nations) 联合国pron.<口>人，事物，家伙，东西unfoiledadj.未被征服的；未被击退的；未受挫的；未受阻的

1. Undifferentiated cells did not express bone marrow markers.
   未分化细胞不会表达骨髓标记物。
2. Sinonasal undifferentiated carcinoma is an uncommon aggressive malignancy of the nasal cavity and the paranasal sinuses.
   摘要鼻腔鼻窦未分化细胞癌是一种罕见且侵犯性很高的鼻腔及鼻窦恶性肿瘤。