钢琴师花了很多时间微调琴键的音准。

The pianist spent hours ___fine-tuning the piano's pitch accuracy.

工程师们正在微调语言模型，以提高翻译准确性。

Engineers are ___fine-tuning the language model to improve translation accuracy.

作曲家花了数小时微调乐曲的节奏。

The composer spent hours ___fine-tuning the rhythm of the music.