1. She developed a malignant breast tumour. 她得了恶性乳腺瘤。
2. A cancer is a malignant tumour. 癌是一种恶性瘤。
3. Moreover, in the domestic rabbits, the warts were no longer benign, but malignant. 此外，家兔的疣不再是良性的，而是恶性的。
4. His experiments were the first clear demonstration of the role of a virus in one type of malignant tumor. 他的实验首次清晰地证明了病毒在一种恶性肿瘤中的作用。
5. As observed with the chickens, the filterable agent, a virus, could seldom be recovered from the malignant tumor which it had induced. 在鸡身上观察到，一种叫滤过性病原体的病毒，很少能从它诱发的恶性肿瘤中恢复过来。
