an 

  1. 冠詞
一個
一種
一副
每一
任一
某一
/此冠詞用於母音a 、e、i、o、u開頭的字前/

    
                        
    2. 
                                                                        
  2. 

    名詞
安(中文名)

    

    
                        
    3. 
                                            

                

            

            
            

                

                
例句

                

                    
    
                                                    
  1. 
                                Have I become an old fart?                            
    2. 
                                                    
  2. 
                                I had an amazing experience .                            
    3. 
                                                    
  3. 
                                An example appears in figure 5-6.                            
    4. 
                                                    
  4. 
                                An estimated 42 people were killed.                            
    5. 
                                                    
  5. 
                                You might have a future as an editor!                            
    6.