master

经过多年练习，他成为了一位小提琴大师。

After years of practice, he became a ___master of the violin.

她被公认为现代舞大师。

She is considered a ___master of modern dance.

我们应该记住，我们是技术的主人，而不是它的奴仆。

We should remember that we are the ___master of technology, not its servant.