You use invasive to describe something undesirable that spreads very quickly and that is very difficult to stop from spreading. (令人不快的事物) 迅速扩散的
adjective [原级] 扩散性的，侵入的；切入的，开刀的
Invasive species are driving away certain native species. 入侵物种正在驱赶某些本地物种。
