tumour metastasis的用法和樣例：
例句
- This study makes a significant contribution to the theory of cancer metastasis.
這項研究對腫瘤轉移理論有重要貢獻。 - While this study sheds valuable light on the mystery of metastasis, there are still areas that puzzle experts.
當這項研究對揭開(kāi)腫瘤轉移之謎露出一線(xiàn)光明時(shí)，仍有一些領(lǐng)域困惑著(zhù)專(zhuān)家們。
