translation.en: It spreads through the population, has mutations that allow it to evade the immune system, and it's the only cancer that we know of that's threatening an entire species with extinction.
translation.zh: 可以在群体中传播 并通过突变侵入免疫系统 这是唯一一个我们目前知道的 能导致一个物种整体灭绝的癌症