求翻译：各种恶性肿瘤的统称。其细胞的生长和分裂速度高于正常细胞，且往往可转移到其他组织。到目前为止，癌症仍是人类治疗率极低的疾病之一。是什么意思？

Of various malignant tumor collectively. The rate of cell growth and Division of higher than normal cells, and are often transferable to other organizations. To date, cancer remains one of the low rate of human treatment of disease.