Trial and error! (BTW,是这么说吗?我昨天刚学的:)
所有跟帖:
• Thanks. I would say, "Tune it up." -renqiulan- ♂ (0 bytes) () 12/04/2022 postreply 12:07:00
• 谢谢,学习了,是精益求精的意思吧? -妖妖灵- ♀ (0 bytes) () 12/04/2022 postreply 12:14:41
• This idiom has much to do with musical instruments. -renqiulan- ♂ (0 bytes) () 12/04/2022 postreply 14:09:57