translation.en: Each one originates in a particular part of the body, and then some kinds of cancer will spread or metastasize to particular other tissues where they must be getting resources that they need.
translation.zh: 每一种癌症一开始都附着在身体的特定部位. 然后一些类型的癌症 会扩散或传播到其它特定的组织结构中 它们需要在那里获得自己需要的资源.