缺陷的白血病病毒的英文：
DLV, defective leukemia virus

The defect in the drainage must be remedied.
这排水系统的缺陷该设法补救。

The individual was somewhat of a small defect.
个别的难免有点小瑕疵。

Congenital defects,blindness,etc
先天性缺陷、失明等.

Incidences of leukemia, tuberculosis,and meningitis have dropped considerably.
白血病，肺结核和脑膜炎的影响范围有了相当的下降。

The mature sarcoma and leukemia virions have type C morphology
成熟的肉瘤和血病的病毒粒子呈C型结构。

Tests showed her bone marrow was clear of leukemia cells.
检查表明她的骨髓明显有白血病细胞。