扩散 kuòsàn to spread
to spread; to proliferate; to diffuse
怎么记住“扩散”: 扩 to expand + 散 to scatter = to spread.
汉字
用法
- To spread out and diffuse, usually uncontrollably - 病毒扩散 (bìngdú kuòsàn) the virus spreads, 癌细胞扩散 cancer metastasizes, 消息扩散 news gets around.
- Implies outward proliferation from a source, often something you'd rather contain.