sad 

  1. 形容詞
傷心的, 悲傷的
悲哀的
(指心情上)難過的
憂愁的
令人悲痛的, 可悲的
糟透了的
(顏色)黯淡的
(人)sad to ...(動詞...):
很難過地做...的
很傷心地做...的

    同義字詞
bad,blue,brokenhearted,cast down,crestfallen,dejected,depressed,despondent,disconsolate,doleful,down,downcast,downhearted,droopy,forlorn,gloomy,glum,hangdog,heartbroken,heartsick,heartsore,heavyhearted,inconsolable,joyless,low,low-spirited,melancholic,melancholy,miserable,mournful,saddened,sorrowful,sorry,unhappy,woebegone,woeful,wretched
depressing,dismal,dreary,heartbreaking,heartrending,melancholy,mournful,pathetic,saddening,sorry,tearful,teary
contemptible,despicable,miserable,pathetic,pitiable,pitiful,sorry,wretched

  2. 縮寫
絕對誤差和(Sum of Absolute Difference)

    
                        
    3. 
                                                                        
  3. 

    名詞
限定單數可數名詞:
a sad state/
a sad state of affairs:
可悲的情況
可悲的局面
可悲的狀況

    

    
                        
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例句

                

                    
    
                                                    
  1. 
                                Dan is sad to see Milo go.                            
    2. 
                                                    
  2. 
                                That is my sad tale of woe.                            
    3. 
                                                    
  3. 
                                Yes, what a sad, sad situation.                            
    4. 
                                                    
  4. 
                                Personal life is sad and lonely.                            
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  5. 
                                It's usually faster, sad to say.                            
    6.