uncertain
                                                    英 [ʌn'sɜːt(ə)n; -tɪn]
                                                                        美 [ʌn'sɝtn]
                        
                
                
                
                
                    
                                    
                
                                                                                                        uncertain 英文词源
                
                
                    
                        - uncertain (adj.)
- 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.
 
                
                                                    uncertain 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. 
- 他停顿下来,犹豫着该如何巧妙地提出那个问题。
来自柯林斯例句