had been fine-tuning
- past perfect progressive of fine-tune.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
She had been fine-tuning her body for months in workouts without a hiccup.
From Washington Post ● Aug. 4, 2021
They had been fine-tuning handoffs with relay coach Jon Drummond and were determined to avoid embarrassment.
From Seattle Times ● Aug. 11, 2012
