unsuccessful
                                                    英 [ʌnsək'sesfʊl; -f(ə)l]
                                                                        美 [,ʌnsək'sɛsfl]
                        
                
                
                
                
                    
                                    
                
                                                                                                        unsuccessful 英文词源
                
                
                    
                        - unsuccessful (adj.)
- 1610s, from un- (1) "not" + successful (adj.). Related: Unsuccessfully. A noun unsuccess "lack of success" is recorded from 1580s.
 
                
                                                    unsuccessful 双语例句
                
                
                    1. Unfortunately attempts to crossbreed it with other potatoes have been unsuccessful.  不幸的是,将它与其他土豆品种杂交的尝试均告失败。 来自柯林斯例句
 - 2. There were reports last month of unsuccessful negotiations between guerrillas and commanders. 
- 有报道称上月游击队和指挥官之间的谈判失败。
来自柯林斯例句
 
- 3. He and his friend Boris were unsuccessful in getting a job. 
- 他和他朋友鲍里斯都没有找到工作。
来自柯林斯例句
 
- 4. His efforts were unsuccessful. 
- 他的努力失败了。
来自柯林斯例句
 
- 5. a brief and unsuccessful flirtation with the property market 
- 对房地产市场一时兴起、并不成功的介入
来自《权威词典》