cancer
/ˈkænsər/
any malignant growth or tumor caused by abnormal and uncontrolled cell division; it may spread to other parts of the body through the lymphatic system or the blood stream
中文释义：癌症；恶性肿瘤
Smoking is a leading cause of lung cancer, which kills millions worldwide each year.
吸烟是肺癌的主要原因，每年导致全球数百万人死亡。
Early detection of cancer significantly improves the chances of successful treatment.
癌症的早期检测大大提高了成功治疗的机会。