To improve one's professional skill has now become a common practice.

钻研业务已蔚然成风。

I rate enthusiasm even above professional skill.

我认为热情甚至比专业技能更重要。

Learning from him, you can get professional skill.

跟着他，你能学到专业技术。

The magician performed his tricks with professional skill.

魔术师以娴熟的专业技巧表演魔术。

The magician performed his tricks with professional skill.

魔术师用熟练的技巧变着戏法。