Thanks. I would say, "Tune it up."

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謝謝,學習了,是精益求精的意思吧? -妖妖靈- 給 妖妖靈 發送悄悄話 妖妖靈 的博客首頁 (0 bytes) () 12/04/2022 postreply 12:14:41

This idiom has much to do with musical instruments. -renqiulan- 給 renqiulan 發送悄悄話 (0 bytes) () 12/04/2022 postreply 14:09:57

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