这架钢琴经过精心调音，音色完美无瑕。

The piano was ___highly tuned to produce flawless tones.

这位小提琴家的耳朵极其敏锐，能察觉最细微的音高变化。

The violinist has ___highly-tuned ears that can detect the slightest pitch variations.

经过多年训练，她拥有高度敏锐的听力，能分辨最细微的音调变化。

After years of training, she has ___highly-tuned hearing that can detect the subtlest pitch changes.