primary cancer的用法和样例：
例句
- A possible way to use the cancer-killing inention is to implant the deice in the body before primary tumor surgery or chemotherapy.
将癌细胞杀灭装置在原发癌手术或化疗前植入体内是一种可行性方法。 - In a process called metastasis, these cells are transmitted from the primary tumor to other locations in the body, where they form secondary, cancerous growths.
该过程可以称为癌转移，即癌细胞从原位癌转移到身体的其它部位形成继发癌。
