I've just revised my original post.
所有跟帖:
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                    Trial and error!   (BTW,是這麽說嗎?我昨天剛學的:)
                     -妖妖靈- 
                    ♀                    
                         
                    
                                                            
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                        12/04/2022 postreply
                                                10:44:35
                    
                                        
                    
                    
                                        
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                        12/04/2022 postreply
                                                10:44:35
                    
                    
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                    Thanks. I would say, "Tune it up."
                     -renqiulan- 
                    ♂                    
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                        12/04/2022 postreply
                                                12:07:00
                    
                                                            
                    
                    
                                        
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                        12/04/2022 postreply
                                                12:07:00
                    
                    
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                    謝謝,學習了,是精益求精的意思吧?
                     -妖妖靈- 
                    ♀                    
                         
                    
                                                            
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                        12/04/2022 postreply
                                                12:14:41
                    
                                        
                    
                    
                                        
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                        12/04/2022 postreply
                                                12:14:41
                    
                    
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                    This idiom has much to do with musical instruments.
                     -renqiulan- 
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                        12/04/2022 postreply
                                                14:09:57
                    
                                                            
                    
                    
                                        
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                        12/04/2022 postreply
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