certainty

英 /ˈsɜːtnti/ 　美 /ˈsɝːtnti/

I cannot say with certainty where I left my keys.

我说不准把钥匙放在哪里了。

Although climate models continue to improve, scientists cannot predict every regional change with absolute certainty.

尽管气候模型不断改进，科学家仍无法完全确定地预测每一项区域变化。

搭配

with certainty 确定地absolute certainty 绝对确定a degree of certainty 一定程度的把握

表确信通常不可数；a certainty指确定的事。

certain (adj.)、certainly (adv.)、uncertain (adj.)、uncertainty (n.)

近义 assurance、sureness