https://tw.voicetube.com/everyday/20171018

英文：

Factors like the cancer cell's properties, and the effectiveness of the immune system in eliminating the cancer cells, also play a role in determining the success of metastasis.

影響的因素諸如：癌症細胞的性質、以及免疫系統在剷除癌細胞時的效能，都會影響轉移的成敗。