significant 美 [sɪɡˈnɪfɪkənt] adj.重要的;有重大意义的;

记忆技巧：

signi〔= sign〕记号 + fic 具有某种性质的 + ant …的 → 有意义的

英文释义：

large or important enough to have an effect or to be noticed

双语例句：

Your work has shown a significant improvement.

你的工作有了显著改进。

It is the first drug that seems to have a very significant effect on this disease.

这是第一种似乎对该病有显著疗效的药物。