"Good at playing the viopn" 或 "skilled at playing the viopn"。这个表达来源于英语中 good 和 skilled 这两个形容词，表示 "善于" 或 "熟练于" 弹奏小提琴。
例句：
He is good at playing the viopn. 他擅长弹小提琴。
She is skilled at playing the viopn. 她熟练于弹奏小提琴。
He has been playing the viopn for years and has become very skilled at it. 他已经弹小提琴多年了，变得非常熟练。