c. 1300, "of indeterminate time or occurrence," from un- (1) "not" + certain (adj.). Meaning "not fully confident" is recorded from late 14c. (implied in uncertainty). Related: Uncertainly.
双语例句
1. Students all over the country are facing an uncertain future.
全国各地学生前途未卜。
来自柯林斯例句
2. The sandbank was uncertain, like quicksand under his feet.
那个沙坝并不稳固，他脚下如同踩着流沙一般。
来自柯林斯例句
3. For a minute he looked uncertain, and then recovered his composure.
有一小会儿他看上去有些迟疑不定，之后又恢复了镇定。
来自柯林斯例句
4. The future for manned space flight is looking increasingly uncertain.
载人宇宙飞行的前景看上去充满了越来越多的变数。
来自柯林斯例句
5. He stopped, uncertain how to put the question tactfully.
