unavailing
                                        英 [ʌnə'veɪlɪŋ]
美 [,ʌnə'velɪŋ]
                                        
                                        
                                                                                
                 
                                
                             
                        
            1、un- "not" + a- "to" (see ad-) + -vail- "be worth" + -ing.
                                                            
            
                                    
            
                 - 1. Efforts to reach the people named in the report proved unavailing. 
- 联系过报告中所提到的那些人,但都徒劳无功。
来自柯林斯例句
 
- 2. He died after a brave but unavailing fight against a terminal illness. 
- 在与绝症进行了一番勇敢但却徒劳的抗争之后,他还是去世了。
来自柯林斯例句
 
- 3. Their efforts were unavailing. 
- 他们的努力都付诸东流。
来自《权威词典》
 
- 4. All our protests were unavailing. 
- 我们的抗议全部无用.
来自《简明英汉词典》
 
- 5. Hurstwood heard the details of the weary and unavailing search that evening. 
- 那天晚上,赫斯渥听到了这次劳而无获的寻找的详细情况.
来自英汉文学 - 嘉莉妹妹