primary cancer的用法和樣例：
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.
將癌細胞殺滅裝置在原發癌手術或化療前植入體內是一種可行性方法。 - 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.
該過程可以稱為癌轉移，即癌細胞從原位癌轉移到身體的其它部位形成繼發癌。
