vigilance

heighten vigilance 提高警覺

vigilance test 警戒值測試 ; 警戒測試

continuous vigilance 持續警覺性 ^[1] 

She stressed the need for constant vigilance.

她強調必須時常保持警惕。

It seems to me they still have some fight left in them. We shouldn't relax our vigilance.

他們餘勇可賈，我們不能放鬆警惕。 ^[1]