He continued playing for more than ten years, gaining proficiency.

This is the duration most Alexander teachers recommend to gain proficiency.

It takes months for individuals to gain proficiency in leadership skills.

General accuracy improved dramatically as the crews gained proficiency with the system.

The officer's aim is to gain proficiency as commanders at platoon level.

He put forth more energy and buzzed toward it, gaining proficiency in flight.

Badges require more skill at this level as the girls gain proficiency.

But he used his eyes as well, and gained proficiency.

Although Hooker was gaining proficiency on guitar, he did not show an interest in singing.

Some heritage speakers explicitly study the language to gain additional proficiency.