to strum a tune

• 轻弹一曲

to strum a tune的用法和样例：

例句

1. Not good is it to harp on the same string.
   不要老是弹一根弦。
2. She can pick up a tune instantly on the piano, it's a gift.
   她可以马上学会用钢琴弹一首曲子，这是天分。