Thanks. I would say, "Tune it up."
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谢谢,学习了,是精益求精的意思吧?
-妖妖灵-
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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